Home / 9,871.57-13,622.28-5,891.23

Finding the Fourth Proportional to 9,871.57, 13,622.28 and 5,891.23

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Solution

The fourth proportional to 9,871.57, 13,622.28 and 5,891.23 is: 8,129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.57 : 13,622.28 = 5,891.23 : x
  2. Step 2: Convert to fraction form
    9,871.57/13,622.28 = 5,891.23/x
  3. Step 3: Cross multiply
    9,871.57x = 13,622.28 × 5,891.23
  4. Step 4: Simplify right side
    9,871.57x = 80,251,979.54
  5. Step 5: Solve for x
    x = 80,251,979.54/9,871.57
  6. Step 6: Final answer
    x = 8,129.61

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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.