Home / 4,772.29-7,151.17-2,428.78

Finding the Fourth Proportional to 4,772.29, 7,151.17 and 2,428.78

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Solution

The fourth proportional to 4,772.29, 7,151.17 and 2,428.78 is: 3,639.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,772.29 : 7,151.17 = 2,428.78 : x
  2. Step 2: Convert to fraction form
    4,772.29/7,151.17 = 2,428.78/x
  3. Step 3: Cross multiply
    4,772.29x = 7,151.17 × 2,428.78
  4. Step 4: Simplify right side
    4,772.29x = 17,368,618.67
  5. Step 5: Solve for x
    x = 17,368,618.67/4,772.29
  6. Step 6: Final answer
    x = 3,639.47

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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.