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Finding the Fourth Proportional to 2,391.92, 3,588.08 and 660.54

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Solution

The fourth proportional to 2,391.92, 3,588.08 and 660.54 is: 990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.92 : 3,588.08 = 660.54 : x
  2. Step 2: Convert to fraction form
    2,391.92/3,588.08 = 660.54/x
  3. Step 3: Cross multiply
    2,391.92x = 3,588.08 × 660.54
  4. Step 4: Simplify right side
    2,391.92x = 2,370,070.36
  5. Step 5: Solve for x
    x = 2,370,070.36/2,391.92
  6. Step 6: Final answer
    x = 990.87

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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.