Home / 6,149.12-9,221.85-1,989.26

Finding the Fourth Proportional to 6,149.12, 9,221.85 and 1,989.26

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Solution

The fourth proportional to 6,149.12, 9,221.85 and 1,989.26 is: 2,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,149.12 : 9,221.85 = 1,989.26 : x
  2. Step 2: Convert to fraction form
    6,149.12/9,221.85 = 1,989.26/x
  3. Step 3: Cross multiply
    6,149.12x = 9,221.85 × 1,989.26
  4. Step 4: Simplify right side
    6,149.12x = 18,344,645.80
  5. Step 5: Solve for x
    x = 18,344,645.80/6,149.12
  6. Step 6: Final answer
    x = 2,983.30

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Double scale
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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.