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Finding the Fourth Proportional to 8,082.79, 12,124.18 and 6,442.54

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Solution

The fourth proportional to 8,082.79, 12,124.18 and 6,442.54 is: 9,663.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,082.79 : 12,124.18 = 6,442.54 : x
  2. Step 2: Convert to fraction form
    8,082.79/12,124.18 = 6,442.54/x
  3. Step 3: Cross multiply
    8,082.79x = 12,124.18 × 6,442.54
  4. Step 4: Simplify right side
    8,082.79x = 78,110,492.36
  5. Step 5: Solve for x
    x = 78,110,492.36/8,082.79
  6. Step 6: Final answer
    x = 9,663.81

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Double scale
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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.