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Finding the Fourth Proportional to 7,008.92, 9,671.87 and 3,865.11

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Solution

The fourth proportional to 7,008.92, 9,671.87 and 3,865.11 is: 5,333.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,008.92 : 9,671.87 = 3,865.11 : x
  2. Step 2: Convert to fraction form
    7,008.92/9,671.87 = 3,865.11/x
  3. Step 3: Cross multiply
    7,008.92x = 9,671.87 × 3,865.11
  4. Step 4: Simplify right side
    7,008.92x = 37,382,841.46
  5. Step 5: Solve for x
    x = 37,382,841.46/7,008.92
  6. Step 6: Final answer
    x = 5,333.61

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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.