Home / 2,871.24-3,957.28-2,471.91

Finding the Fourth Proportional to 2,871.24, 3,957.28 and 2,471.91

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Solution

The fourth proportional to 2,871.24, 3,957.28 and 2,471.91 is: 3,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.24 : 3,957.28 = 2,471.91 : x
  2. Step 2: Convert to fraction form
    2,871.24/3,957.28 = 2,471.91/x
  3. Step 3: Cross multiply
    2,871.24x = 3,957.28 × 2,471.91
  4. Step 4: Simplify right side
    2,871.24x = 9,782,040.00
  5. Step 5: Solve for x
    x = 9,782,040.00/2,871.24
  6. Step 6: Final answer
    x = 3,406.90

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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.