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Finding the Fourth Proportional to 7,863.03, 10,843.20 and 7,180.29

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Solution

The fourth proportional to 7,863.03, 10,843.20 and 7,180.29 is: 9,901.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.03 : 10,843.20 = 7,180.29 : x
  2. Step 2: Convert to fraction form
    7,863.03/10,843.20 = 7,180.29/x
  3. Step 3: Cross multiply
    7,863.03x = 10,843.20 × 7,180.29
  4. Step 4: Simplify right side
    7,863.03x = 77,857,320.53
  5. Step 5: Solve for x
    x = 77,857,320.53/7,863.03
  6. Step 6: Final answer
    x = 9,901.69

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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.