Home / 3,982.28-5,973.42-1,385.20

Finding the Fourth Proportional to 3,982.28, 5,973.42 and 1,385.20

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Solution

The fourth proportional to 3,982.28, 5,973.42 and 1,385.20 is: 2,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.28 : 5,973.42 = 1,385.20 : x
  2. Step 2: Convert to fraction form
    3,982.28/5,973.42 = 1,385.20/x
  3. Step 3: Cross multiply
    3,982.28x = 5,973.42 × 1,385.20
  4. Step 4: Simplify right side
    3,982.28x = 8,274,381.38
  5. Step 5: Solve for x
    x = 8,274,381.38/3,982.28
  6. Step 6: Final answer
    x = 2,077.80

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Similar ratio
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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.