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Finding the Fourth Proportional to 5,008.42, 7,513.13 and 1,721.08

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Solution

The fourth proportional to 5,008.42, 7,513.13 and 1,721.08 is: 2,581.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.42 : 7,513.13 = 1,721.08 : x
  2. Step 2: Convert to fraction form
    5,008.42/7,513.13 = 1,721.08/x
  3. Step 3: Cross multiply
    5,008.42x = 7,513.13 × 1,721.08
  4. Step 4: Simplify right side
    5,008.42x = 12,930,711.47
  5. Step 5: Solve for x
    x = 12,930,711.47/5,008.42
  6. Step 6: Final answer
    x = 2,581.79

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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.