Home / 8,123.20-12,184.80-4,227.10

Finding the Fourth Proportional to 8,123.20, 12,184.80 and 4,227.10

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Solution

The fourth proportional to 8,123.20, 12,184.80 and 4,227.10 is: 6,340.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.20 : 12,184.80 = 4,227.10 : x
  2. Step 2: Convert to fraction form
    8,123.20/12,184.80 = 4,227.10/x
  3. Step 3: Cross multiply
    8,123.20x = 12,184.80 × 4,227.10
  4. Step 4: Simplify right side
    8,123.20x = 51,506,368.08
  5. Step 5: Solve for x
    x = 51,506,368.08/8,123.20
  6. Step 6: Final answer
    x = 6,340.65

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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.