Home / 3,512.26-5,268.39-915.20

Finding the Fourth Proportional to 3,512.26, 5,268.39 and 915.20

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Solution

The fourth proportional to 3,512.26, 5,268.39 and 915.20 is: 1,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.26 : 5,268.39 = 915.20 : x
  2. Step 2: Convert to fraction form
    3,512.26/5,268.39 = 915.20/x
  3. Step 3: Cross multiply
    3,512.26x = 5,268.39 × 915.20
  4. Step 4: Simplify right side
    3,512.26x = 4,821,599.61
  5. Step 5: Solve for x
    x = 4,821,599.61/3,512.26
  6. Step 6: Final answer
    x = 1,372.79

Related Problems

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Half scale
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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.