Home / 8,391.12-12,582.56-3,463.20

Finding the Fourth Proportional to 8,391.12, 12,582.56 and 3,463.20

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Solution

The fourth proportional to 8,391.12, 12,582.56 and 3,463.20 is: 5,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.12 : 12,582.56 = 3,463.20 : x
  2. Step 2: Convert to fraction form
    8,391.12/12,582.56 = 3,463.20/x
  3. Step 3: Cross multiply
    8,391.12x = 12,582.56 × 3,463.20
  4. Step 4: Simplify right side
    8,391.12x = 43,575,921.79
  5. Step 5: Solve for x
    x = 43,575,921.79/8,391.12
  6. Step 6: Final answer
    x = 5,193.10

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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.