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Finding the Fourth Proportional to 8,132.85, 12,213.18 and 5,031.18

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Solution

The fourth proportional to 8,132.85, 12,213.18 and 5,031.18 is: 7,555.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.85 : 12,213.18 = 5,031.18 : x
  2. Step 2: Convert to fraction form
    8,132.85/12,213.18 = 5,031.18/x
  3. Step 3: Cross multiply
    8,132.85x = 12,213.18 × 5,031.18
  4. Step 4: Simplify right side
    8,132.85x = 61,446,706.95
  5. Step 5: Solve for x
    x = 61,446,706.95/8,132.85
  6. Step 6: Final answer
    x = 7,555.37

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Half scale
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Double scale
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1.5x scale

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.