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Finding the Fourth Proportional to 8,438.97, 12,658.65 and 2,595.63

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Solution

The fourth proportional to 8,438.97, 12,658.65 and 2,595.63 is: 3,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.97 : 12,658.65 = 2,595.63 : x
  2. Step 2: Convert to fraction form
    8,438.97/12,658.65 = 2,595.63/x
  3. Step 3: Cross multiply
    8,438.97x = 12,658.65 × 2,595.63
  4. Step 4: Simplify right side
    8,438.97x = 32,857,171.70
  5. Step 5: Solve for x
    x = 32,857,171.70/8,438.97
  6. Step 6: Final answer
    x = 3,893.50

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Half scale
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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.