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Finding the Fourth Proportional to 8,442.55, 12,663.84 and 2,202.55

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Solution

The fourth proportional to 8,442.55, 12,663.84 and 2,202.55 is: 3,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.55 : 12,663.84 = 2,202.55 : x
  2. Step 2: Convert to fraction form
    8,442.55/12,663.84 = 2,202.55/x
  3. Step 3: Cross multiply
    8,442.55x = 12,663.84 × 2,202.55
  4. Step 4: Simplify right side
    8,442.55x = 27,892,740.79
  5. Step 5: Solve for x
    x = 27,892,740.79/8,442.55
  6. Step 6: Final answer
    x = 3,303.83

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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.