Home / 3,683.40-5,082.70-2,191.12

Finding the Fourth Proportional to 3,683.40, 5,082.70 and 2,191.12

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Solution

The fourth proportional to 3,683.40, 5,082.70 and 2,191.12 is: 3,023.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,683.40 : 5,082.70 = 2,191.12 : x
  2. Step 2: Convert to fraction form
    3,683.40/5,082.70 = 2,191.12/x
  3. Step 3: Cross multiply
    3,683.40x = 5,082.70 × 2,191.12
  4. Step 4: Simplify right side
    3,683.40x = 11,136,805.62
  5. Step 5: Solve for x
    x = 11,136,805.62/3,683.40
  6. Step 6: Final answer
    x = 3,023.51

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.