Home / 8,755.30-12,086.40-5,613.28

Finding the Fourth Proportional to 8,755.30, 12,086.40 and 5,613.28

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Solution

The fourth proportional to 8,755.30, 12,086.40 and 5,613.28 is: 7,748.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.30 : 12,086.40 = 5,613.28 : x
  2. Step 2: Convert to fraction form
    8,755.30/12,086.40 = 5,613.28/x
  3. Step 3: Cross multiply
    8,755.30x = 12,086.40 × 5,613.28
  4. Step 4: Simplify right side
    8,755.30x = 67,844,347.39
  5. Step 5: Solve for x
    x = 67,844,347.39/8,755.30
  6. Step 6: Final answer
    x = 7,748.95

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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.