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Finding the Fourth Proportional to 5,654.32, 7,799.02 and 3,890.14

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Solution

The fourth proportional to 5,654.32, 7,799.02 and 3,890.14 is: 5,365.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,654.32 : 7,799.02 = 3,890.14 : x
  2. Step 2: Convert to fraction form
    5,654.32/7,799.02 = 3,890.14/x
  3. Step 3: Cross multiply
    5,654.32x = 7,799.02 × 3,890.14
  4. Step 4: Simplify right side
    5,654.32x = 30,339,279.66
  5. Step 5: Solve for x
    x = 30,339,279.66/5,654.32
  6. Step 6: Final answer
    x = 5,365.68

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.