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Finding the Fourth Proportional to 2,724.64, 4,088.80 and 993.44

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Solution

The fourth proportional to 2,724.64, 4,088.80 and 993.44 is: 1,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,724.64 : 4,088.80 = 993.44 : x
  2. Step 2: Convert to fraction form
    2,724.64/4,088.80 = 993.44/x
  3. Step 3: Cross multiply
    2,724.64x = 4,088.80 × 993.44
  4. Step 4: Simplify right side
    2,724.64x = 4,061,977.47
  5. Step 5: Solve for x
    x = 4,061,977.47/2,724.64
  6. Step 6: Final answer
    x = 1,490.83

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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.