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Finding the Fourth Proportional to 1,871.27, 2,807.11 and 701.83

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Solution

The fourth proportional to 1,871.27, 2,807.11 and 701.83 is: 1,052.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.27 : 2,807.11 = 701.83 : x
  2. Step 2: Convert to fraction form
    1,871.27/2,807.11 = 701.83/x
  3. Step 3: Cross multiply
    1,871.27x = 2,807.11 × 701.83
  4. Step 4: Simplify right side
    1,871.27x = 1,970,114.45
  5. Step 5: Solve for x
    x = 1,970,114.45/1,871.27
  6. Step 6: Final answer
    x = 1,052.82

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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.