Home / 8,861.31-12,225.35-5,081.90

Finding the Fourth Proportional to 8,861.31, 12,225.35 and 5,081.90

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Solution

The fourth proportional to 8,861.31, 12,225.35 and 5,081.90 is: 7,011.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.31 : 12,225.35 = 5,081.90 : x
  2. Step 2: Convert to fraction form
    8,861.31/12,225.35 = 5,081.90/x
  3. Step 3: Cross multiply
    8,861.31x = 12,225.35 × 5,081.90
  4. Step 4: Simplify right side
    8,861.31x = 62,127,957.74
  5. Step 5: Solve for x
    x = 62,127,957.74/8,861.31
  6. Step 6: Final answer
    x = 7,011.15

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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.