Home / 4,724.97-6,520.79-3,128.88

Finding the Fourth Proportional to 4,724.97, 6,520.79 and 3,128.88

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Solution

The fourth proportional to 4,724.97, 6,520.79 and 3,128.88 is: 4,318.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,724.97 : 6,520.79 = 3,128.88 : x
  2. Step 2: Convert to fraction form
    4,724.97/6,520.79 = 3,128.88/x
  3. Step 3: Cross multiply
    4,724.97x = 6,520.79 × 3,128.88
  4. Step 4: Simplify right side
    4,724.97x = 20,402,753.77
  5. Step 5: Solve for x
    x = 20,402,753.77/4,724.97
  6. Step 6: Final answer
    x = 4,318.07

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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.