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Finding the Fourth Proportional to 8,080.77, 12,121.17 and 4,384.74

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Solution

The fourth proportional to 8,080.77, 12,121.17 and 4,384.74 is: 6,577.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.77 : 12,121.17 = 4,384.74 : x
  2. Step 2: Convert to fraction form
    8,080.77/12,121.17 = 4,384.74/x
  3. Step 3: Cross multiply
    8,080.77x = 12,121.17 × 4,384.74
  4. Step 4: Simplify right side
    8,080.77x = 53,148,178.95
  5. Step 5: Solve for x
    x = 53,148,178.95/8,080.77
  6. Step 6: Final answer
    x = 6,577.12

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Double scale
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Similar ratio
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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.