Home / 5,489.28-8,236.40-2,718.72

Finding the Fourth Proportional to 5,489.28, 8,236.40 and 2,718.72

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Solution

The fourth proportional to 5,489.28, 8,236.40 and 2,718.72 is: 4,079.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.28 : 8,236.40 = 2,718.72 : x
  2. Step 2: Convert to fraction form
    5,489.28/8,236.40 = 2,718.72/x
  3. Step 3: Cross multiply
    5,489.28x = 8,236.40 × 2,718.72
  4. Step 4: Simplify right side
    5,489.28x = 22,392,465.41
  5. Step 5: Solve for x
    x = 22,392,465.41/5,489.28
  6. Step 6: Final answer
    x = 4,079.31

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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.