Home / 8,660.38-12,987.37-3,112.23

Finding the Fourth Proportional to 8,660.38, 12,987.37 and 3,112.23

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Solution

The fourth proportional to 8,660.38, 12,987.37 and 3,112.23 is: 4,667.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.38 : 12,987.37 = 3,112.23 : x
  2. Step 2: Convert to fraction form
    8,660.38/12,987.37 = 3,112.23/x
  3. Step 3: Cross multiply
    8,660.38x = 12,987.37 × 3,112.23
  4. Step 4: Simplify right side
    8,660.38x = 40,419,666.97
  5. Step 5: Solve for x
    x = 40,419,666.97/8,660.38
  6. Step 6: Final answer
    x = 4,667.19

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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.