Home / 7,428.28-11,143.86-3,731.32

Finding the Fourth Proportional to 7,428.28, 11,143.86 and 3,731.32

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Solution

The fourth proportional to 7,428.28, 11,143.86 and 3,731.32 is: 5,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.28 : 11,143.86 = 3,731.32 : x
  2. Step 2: Convert to fraction form
    7,428.28/11,143.86 = 3,731.32/x
  3. Step 3: Cross multiply
    7,428.28x = 11,143.86 × 3,731.32
  4. Step 4: Simplify right side
    7,428.28x = 41,581,307.70
  5. Step 5: Solve for x
    x = 41,581,307.70/7,428.28
  6. Step 6: Final answer
    x = 5,597.70

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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.