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Finding the Fourth Proportional to 2,691.65, 3,714.06 and 1,512.50

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Solution

The fourth proportional to 2,691.65, 3,714.06 and 1,512.50 is: 2,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.65 : 3,714.06 = 1,512.50 : x
  2. Step 2: Convert to fraction form
    2,691.65/3,714.06 = 1,512.50/x
  3. Step 3: Cross multiply
    2,691.65x = 3,714.06 × 1,512.50
  4. Step 4: Simplify right side
    2,691.65x = 5,617,497.18
  5. Step 5: Solve for x
    x = 5,617,497.18/2,691.65
  6. Step 6: Final answer
    x = 2,087.01

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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.