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Finding the Fourth Proportional to 8,815.73, 12,167.81 and 5,987.81

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Solution

The fourth proportional to 8,815.73, 12,167.81 and 5,987.81 is: 8,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.73 : 12,167.81 = 5,987.81 : x
  2. Step 2: Convert to fraction form
    8,815.73/12,167.81 = 5,987.81/x
  3. Step 3: Cross multiply
    8,815.73x = 12,167.81 × 5,987.81
  4. Step 4: Simplify right side
    8,815.73x = 72,858,443.62
  5. Step 5: Solve for x
    x = 72,858,443.62/8,815.73
  6. Step 6: Final answer
    x = 8,264.60

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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.