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Finding the Fourth Proportional to 8,118.63, 12,177.95 and 1,962.63

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Solution

The fourth proportional to 8,118.63, 12,177.95 and 1,962.63 is: 2,943.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.63 : 12,177.95 = 1,962.63 : x
  2. Step 2: Convert to fraction form
    8,118.63/12,177.95 = 1,962.63/x
  3. Step 3: Cross multiply
    8,118.63x = 12,177.95 × 1,962.63
  4. Step 4: Simplify right side
    8,118.63x = 23,900,800.20
  5. Step 5: Solve for x
    x = 23,900,800.20/8,118.63
  6. Step 6: Final answer
    x = 2,943.95

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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.