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Finding the Fourth Proportional to 2,487.54, 3,724.35 and 1,330.74

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Solution

The fourth proportional to 2,487.54, 3,724.35 and 1,330.74 is: 1,992.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.54 : 3,724.35 = 1,330.74 : x
  2. Step 2: Convert to fraction form
    2,487.54/3,724.35 = 1,330.74/x
  3. Step 3: Cross multiply
    2,487.54x = 3,724.35 × 1,330.74
  4. Step 4: Simplify right side
    2,487.54x = 4,956,141.52
  5. Step 5: Solve for x
    x = 4,956,141.52/2,487.54
  6. Step 6: Final answer
    x = 1,992.39

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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.