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Finding the Fourth Proportional to 2,714.72, 4,071.87 and 766.87

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Solution

The fourth proportional to 2,714.72, 4,071.87 and 766.87 is: 1,150.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,714.72 : 4,071.87 = 766.87 : x
  2. Step 2: Convert to fraction form
    2,714.72/4,071.87 = 766.87/x
  3. Step 3: Cross multiply
    2,714.72x = 4,071.87 × 766.87
  4. Step 4: Simplify right side
    2,714.72x = 3,122,584.77
  5. Step 5: Solve for x
    x = 3,122,584.77/2,714.72
  6. Step 6: Final answer
    x = 1,150.24

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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.