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Finding the Fourth Proportional to 8,750.01, 13,120.19 and 5,979.81

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Solution

The fourth proportional to 8,750.01, 13,120.19 and 5,979.81 is: 8,966.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.01 : 13,120.19 = 5,979.81 : x
  2. Step 2: Convert to fraction form
    8,750.01/13,120.19 = 5,979.81/x
  3. Step 3: Cross multiply
    8,750.01x = 13,120.19 × 5,979.81
  4. Step 4: Simplify right side
    8,750.01x = 78,456,243.36
  5. Step 5: Solve for x
    x = 78,456,243.36/8,750.01
  6. Step 6: Final answer
    x = 8,966.42

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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.