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Finding the Fourth Proportional to 8,401.65, 12,605.28 and 3,721.02

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Solution

The fourth proportional to 8,401.65, 12,605.28 and 3,721.02 is: 5,582.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,401.65 : 12,605.28 = 3,721.02 : x
  2. Step 2: Convert to fraction form
    8,401.65/12,605.28 = 3,721.02/x
  3. Step 3: Cross multiply
    8,401.65x = 12,605.28 × 3,721.02
  4. Step 4: Simplify right side
    8,401.65x = 46,904,498.99
  5. Step 5: Solve for x
    x = 46,904,498.99/8,401.65
  6. Step 6: Final answer
    x = 5,582.77

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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.