Home / 8,456.72-12,685.08-2,613.20

Finding the Fourth Proportional to 8,456.72, 12,685.08 and 2,613.20

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Solution

The fourth proportional to 8,456.72, 12,685.08 and 2,613.20 is: 3,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.72 : 12,685.08 = 2,613.20 : x
  2. Step 2: Convert to fraction form
    8,456.72/12,685.08 = 2,613.20/x
  3. Step 3: Cross multiply
    8,456.72x = 12,685.08 × 2,613.20
  4. Step 4: Simplify right side
    8,456.72x = 33,148,651.06
  5. Step 5: Solve for x
    x = 33,148,651.06/8,456.72
  6. Step 6: Final answer
    x = 3,919.80

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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.