Home / 8,957.28-12,371.40-6,728.88

Finding the Fourth Proportional to 8,957.28, 12,371.40 and 6,728.88

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Solution

The fourth proportional to 8,957.28, 12,371.40 and 6,728.88 is: 9,293.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.28 : 12,371.40 = 6,728.88 : x
  2. Step 2: Convert to fraction form
    8,957.28/12,371.40 = 6,728.88/x
  3. Step 3: Cross multiply
    8,957.28x = 12,371.40 × 6,728.88
  4. Step 4: Simplify right side
    8,957.28x = 83,245,666.03
  5. Step 5: Solve for x
    x = 83,245,666.03/8,957.28
  6. Step 6: Final answer
    x = 9,293.63

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1.5x scale

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.