Home / 3,728.40-5,145.45-2,236.29

Finding the Fourth Proportional to 3,728.40, 5,145.45 and 2,236.29

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Solution

The fourth proportional to 3,728.40, 5,145.45 and 2,236.29 is: 3,086.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.40 : 5,145.45 = 2,236.29 : x
  2. Step 2: Convert to fraction form
    3,728.40/5,145.45 = 2,236.29/x
  3. Step 3: Cross multiply
    3,728.40x = 5,145.45 × 2,236.29
  4. Step 4: Simplify right side
    3,728.40x = 11,506,718.38
  5. Step 5: Solve for x
    x = 11,506,718.38/3,728.40
  6. Step 6: Final answer
    x = 3,086.23

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Half scale
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Double 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.