Home / 7,420.68-11,131.56-3,039.12

Finding the Fourth Proportional to 7,420.68, 11,131.56 and 3,039.12

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Solution

The fourth proportional to 7,420.68, 11,131.56 and 3,039.12 is: 4,558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.68 : 11,131.56 = 3,039.12 : x
  2. Step 2: Convert to fraction form
    7,420.68/11,131.56 = 3,039.12/x
  3. Step 3: Cross multiply
    7,420.68x = 11,131.56 × 3,039.12
  4. Step 4: Simplify right side
    7,420.68x = 33,830,146.63
  5. Step 5: Solve for x
    x = 33,830,146.63/7,420.68
  6. Step 6: Final answer
    x = 4,558.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.