Home / 8,412.30-12,618.45-7,490.70

Finding the Fourth Proportional to 8,412.30, 12,618.45 and 7,490.70

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Solution

The fourth proportional to 8,412.30, 12,618.45 and 7,490.70 is: 11,236.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.30 : 12,618.45 = 7,490.70 : x
  2. Step 2: Convert to fraction form
    8,412.30/12,618.45 = 7,490.70/x
  3. Step 3: Cross multiply
    8,412.30x = 12,618.45 × 7,490.70
  4. Step 4: Simplify right side
    8,412.30x = 94,521,023.42
  5. Step 5: Solve for x
    x = 94,521,023.42/8,412.30
  6. Step 6: Final answer
    x = 11,236.05

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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.