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Finding the Fourth Proportional to 8,750.70, 13,101.39 and 7,864.97

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Solution

The fourth proportional to 8,750.70, 13,101.39 and 7,864.97 is: 11,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.70 : 13,101.39 = 7,864.97 : x
  2. Step 2: Convert to fraction form
    8,750.70/13,101.39 = 7,864.97/x
  3. Step 3: Cross multiply
    8,750.70x = 13,101.39 × 7,864.97
  4. Step 4: Simplify right side
    8,750.70x = 103,041,973.80
  5. Step 5: Solve for x
    x = 103,041,973.80/8,750.70
  6. Step 6: Final answer
    x = 11,775.28

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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.