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Finding the Fourth Proportional to 5,290.61, 7,929.90 and 2,476.52

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Solution

The fourth proportional to 5,290.61, 7,929.90 and 2,476.52 is: 3,711.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.61 : 7,929.90 = 2,476.52 : x
  2. Step 2: Convert to fraction form
    5,290.61/7,929.90 = 2,476.52/x
  3. Step 3: Cross multiply
    5,290.61x = 7,929.90 × 2,476.52
  4. Step 4: Simplify right side
    5,290.61x = 19,638,516.30
  5. Step 5: Solve for x
    x = 19,638,516.30/5,290.61
  6. Step 6: Final answer
    x = 3,711.96

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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.