Home / 8,755.20-12,079.08-5,613.12

Finding the Fourth Proportional to 8,755.20, 12,079.08 and 5,613.12

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Solution

The fourth proportional to 8,755.20, 12,079.08 and 5,613.12 is: 7,744.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.20 : 12,079.08 = 5,613.12 : x
  2. Step 2: Convert to fraction form
    8,755.20/12,079.08 = 5,613.12/x
  3. Step 3: Cross multiply
    8,755.20x = 12,079.08 × 5,613.12
  4. Step 4: Simplify right side
    8,755.20x = 67,801,325.53
  5. Step 5: Solve for x
    x = 67,801,325.53/8,755.20
  6. Step 6: Final answer
    x = 7,744.12

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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.