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Finding the Fourth Proportional to 6,385.92, 9,578.88 and 2,007.12

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Solution

The fourth proportional to 6,385.92, 9,578.88 and 2,007.12 is: 3,010.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.92 : 9,578.88 = 2,007.12 : x
  2. Step 2: Convert to fraction form
    6,385.92/9,578.88 = 2,007.12/x
  3. Step 3: Cross multiply
    6,385.92x = 9,578.88 × 2,007.12
  4. Step 4: Simplify right side
    6,385.92x = 19,225,961.63
  5. Step 5: Solve for x
    x = 19,225,961.63/6,385.92
  6. Step 6: Final answer
    x = 3,010.68

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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.