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Finding the Fourth Proportional to 2,691.37, 3,713.90 and 1,512.61

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Solution

The fourth proportional to 2,691.37, 3,713.90 and 1,512.61 is: 2,087.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.37 : 3,713.90 = 1,512.61 : x
  2. Step 2: Convert to fraction form
    2,691.37/3,713.90 = 1,512.61/x
  3. Step 3: Cross multiply
    2,691.37x = 3,713.90 × 1,512.61
  4. Step 4: Simplify right side
    2,691.37x = 5,617,689.67
  5. Step 5: Solve for x
    x = 5,617,689.67/2,691.37
  6. Step 6: Final answer
    x = 2,087.30

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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.