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Finding the Fourth Proportional to 2,710.92, 4,066.52 and 862.18

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Solution

The fourth proportional to 2,710.92, 4,066.52 and 862.18 is: 1,293.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,710.92 : 4,066.52 = 862.18 : x
  2. Step 2: Convert to fraction form
    2,710.92/4,066.52 = 862.18/x
  3. Step 3: Cross multiply
    2,710.92x = 4,066.52 × 862.18
  4. Step 4: Simplify right side
    2,710.92x = 3,506,072.21
  5. Step 5: Solve for x
    x = 3,506,072.21/2,710.92
  6. Step 6: Final answer
    x = 1,293.31

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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.