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Finding the Fourth Proportional to 8,750.25, 12,071.18 and 5,918.61

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Solution

The fourth proportional to 8,750.25, 12,071.18 and 5,918.61 is: 8,164.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.25 : 12,071.18 = 5,918.61 : x
  2. Step 2: Convert to fraction form
    8,750.25/12,071.18 = 5,918.61/x
  3. Step 3: Cross multiply
    8,750.25x = 12,071.18 × 5,918.61
  4. Step 4: Simplify right side
    8,750.25x = 71,444,666.72
  5. Step 5: Solve for x
    x = 71,444,666.72/8,750.25
  6. Step 6: Final answer
    x = 8,164.87

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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.