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Finding the Fourth Proportional to 2,724.32, 4,086.48 and 672.32

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Solution

The fourth proportional to 2,724.32, 4,086.48 and 672.32 is: 1,008.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,724.32 : 4,086.48 = 672.32 : x
  2. Step 2: Convert to fraction form
    2,724.32/4,086.48 = 672.32/x
  3. Step 3: Cross multiply
    2,724.32x = 4,086.48 × 672.32
  4. Step 4: Simplify right side
    2,724.32x = 2,747,422.23
  5. Step 5: Solve for x
    x = 2,747,422.23/2,724.32
  6. Step 6: Final answer
    x = 1,008.48

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1.5x scale

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.