Home / 3,982.18-5,973.27-1,385.12

Finding the Fourth Proportional to 3,982.18, 5,973.27 and 1,385.12

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Solution

The fourth proportional to 3,982.18, 5,973.27 and 1,385.12 is: 2,077.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.18 : 5,973.27 = 1,385.12 : x
  2. Step 2: Convert to fraction form
    3,982.18/5,973.27 = 1,385.12/x
  3. Step 3: Cross multiply
    3,982.18x = 5,973.27 × 1,385.12
  4. Step 4: Simplify right side
    3,982.18x = 8,273,665.88
  5. Step 5: Solve for x
    x = 8,273,665.88/3,982.18
  6. Step 6: Final answer
    x = 2,077.67

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Double scale
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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.