Home / 2,450.38-3,381.41-1,388.12

Finding the Fourth Proportional to 2,450.38, 3,381.41 and 1,388.12

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Solution

The fourth proportional to 2,450.38, 3,381.41 and 1,388.12 is: 1,915.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,450.38 : 3,381.41 = 1,388.12 : x
  2. Step 2: Convert to fraction form
    2,450.38/3,381.41 = 1,388.12/x
  3. Step 3: Cross multiply
    2,450.38x = 3,381.41 × 1,388.12
  4. Step 4: Simplify right side
    2,450.38x = 4,693,819.18
  5. Step 5: Solve for x
    x = 4,693,819.18/2,450.38
  6. Step 6: Final answer
    x = 1,915.55

Related Problems

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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.