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Finding the Fourth Proportional to 2,442, 3,663.54 and 981.24

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Solution

The fourth proportional to 2,442, 3,663.54 and 981.24 is: 1,472.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,442 : 3,663.54 = 981.24 : x
  2. Step 2: Convert to fraction form
    2,442/3,663.54 = 981.24/x
  3. Step 3: Cross multiply
    2,442x = 3,663.54 × 981.24
  4. Step 4: Simplify right side
    2,442x = 3,594,811.99
  5. Step 5: Solve for x
    x = 3,594,811.99/2,442
  6. Step 6: Final answer
    x = 1,472.08

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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.