Home / 7,538.11-10,402.45-4,180.75

Finding the Fourth Proportional to 7,538.11, 10,402.45 and 4,180.75

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Solution

The fourth proportional to 7,538.11, 10,402.45 and 4,180.75 is: 5,769.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.11 : 10,402.45 = 4,180.75 : x
  2. Step 2: Convert to fraction form
    7,538.11/10,402.45 = 4,180.75/x
  3. Step 3: Cross multiply
    7,538.11x = 10,402.45 × 4,180.75
  4. Step 4: Simplify right side
    7,538.11x = 43,490,042.84
  5. Step 5: Solve for x
    x = 43,490,042.84/7,538.11
  6. Step 6: Final answer
    x = 5,769.36

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Find fourth proportional to 3,769.06, 5,201.23 and 2,090.38
Half scale
Find fourth proportional to 15,076.22, 20,804.90 and 8,361.50
Double scale
Find fourth proportional to 7,539.11, 10,403.83 and 4,181.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.