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Finding the Fourth Proportional to 3,512.46, 5,268.24 and 915.24

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Solution

The fourth proportional to 3,512.46, 5,268.24 and 915.24 is: 1,372.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.46 : 5,268.24 = 915.24 : x
  2. Step 2: Convert to fraction form
    3,512.46/5,268.24 = 915.24/x
  3. Step 3: Cross multiply
    3,512.46x = 5,268.24 × 915.24
  4. Step 4: Simplify right side
    3,512.46x = 4,821,703.98
  5. Step 5: Solve for x
    x = 4,821,703.98/3,512.46
  6. Step 6: Final answer
    x = 1,372.74

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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.