Home / 4,243.20-6,331.52-4,218.88

Finding the Fourth Proportional to 4,243.20, 6,331.52 and 4,218.88

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Solution

The fourth proportional to 4,243.20, 6,331.52 and 4,218.88 is: 6,295.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,243.20 : 6,331.52 = 4,218.88 : x
  2. Step 2: Convert to fraction form
    4,243.20/6,331.52 = 4,218.88/x
  3. Step 3: Cross multiply
    4,243.20x = 6,331.52 × 4,218.88
  4. Step 4: Simplify right side
    4,243.20x = 26,711,923.10
  5. Step 5: Solve for x
    x = 26,711,923.10/4,243.20
  6. Step 6: Final answer
    x = 6,295.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.