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Finding the Fourth Proportional to 2,724.12, 4,085.37 and 992.88

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Solution

The fourth proportional to 2,724.12, 4,085.37 and 992.88 is: 1,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,724.12 : 4,085.37 = 992.88 : x
  2. Step 2: Convert to fraction form
    2,724.12/4,085.37 = 992.88/x
  3. Step 3: Cross multiply
    2,724.12x = 4,085.37 × 992.88
  4. Step 4: Simplify right side
    2,724.12x = 4,056,282.17
  5. Step 5: Solve for x
    x = 4,056,282.17/2,724.12
  6. Step 6: Final answer
    x = 1,489.02

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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.