Home / 8,081.60-11,151.92-4,937.20

Finding the Fourth Proportional to 8,081.60, 11,151.92 and 4,937.20

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Solution

The fourth proportional to 8,081.60, 11,151.92 and 4,937.20 is: 6,812.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.60 : 11,151.92 = 4,937.20 : x
  2. Step 2: Convert to fraction form
    8,081.60/11,151.92 = 4,937.20/x
  3. Step 3: Cross multiply
    8,081.60x = 11,151.92 × 4,937.20
  4. Step 4: Simplify right side
    8,081.60x = 55,059,259.42
  5. Step 5: Solve for x
    x = 55,059,259.42/8,081.60
  6. Step 6: Final answer
    x = 6,812.92

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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.