Home / 8,654.97-12,984.81-2,811.57

Finding the Fourth Proportional to 8,654.97, 12,984.81 and 2,811.57

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Solution

The fourth proportional to 8,654.97, 12,984.81 and 2,811.57 is: 4,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.97 : 12,984.81 = 2,811.57 : x
  2. Step 2: Convert to fraction form
    8,654.97/12,984.81 = 2,811.57/x
  3. Step 3: Cross multiply
    8,654.97x = 12,984.81 × 2,811.57
  4. Step 4: Simplify right side
    8,654.97x = 36,507,702.25
  5. Step 5: Solve for x
    x = 36,507,702.25/8,654.97
  6. Step 6: Final answer
    x = 4,218.12

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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.