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Finding the Fourth Proportional to 8,421.90, 11,626.97 and 5,593.14

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Solution

The fourth proportional to 8,421.90, 11,626.97 and 5,593.14 is: 7,721.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.90 : 11,626.97 = 5,593.14 : x
  2. Step 2: Convert to fraction form
    8,421.90/11,626.97 = 5,593.14/x
  3. Step 3: Cross multiply
    8,421.90x = 11,626.97 × 5,593.14
  4. Step 4: Simplify right side
    8,421.90x = 65,031,243.02
  5. Step 5: Solve for x
    x = 65,031,243.02/8,421.90
  6. Step 6: Final answer
    x = 7,721.68

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.