Home / 7,539.20-10,403.70-4,181.75

Finding the Fourth Proportional to 7,539.20, 10,403.70 and 4,181.75

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Solution

The fourth proportional to 7,539.20, 10,403.70 and 4,181.75 is: 5,770.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,539.20 : 10,403.70 = 4,181.75 : x
  2. Step 2: Convert to fraction form
    7,539.20/10,403.70 = 4,181.75/x
  3. Step 3: Cross multiply
    7,539.20x = 10,403.70 × 4,181.75
  4. Step 4: Simplify right side
    7,539.20x = 43,505,672.48
  5. Step 5: Solve for x
    x = 43,505,672.48/7,539.20
  6. Step 6: Final answer
    x = 5,770.60

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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.