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Finding the Fourth Proportional to 2,972, 4,456.56 and 1,411.04

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Solution

The fourth proportional to 2,972, 4,456.56 and 1,411.04 is: 2,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972 : 4,456.56 = 1,411.04 : x
  2. Step 2: Convert to fraction form
    2,972/4,456.56 = 1,411.04/x
  3. Step 3: Cross multiply
    2,972x = 4,456.56 × 1,411.04
  4. Step 4: Simplify right side
    2,972x = 6,288,384.42
  5. Step 5: Solve for x
    x = 6,288,384.42/2,972
  6. Step 6: Final answer
    x = 2,115.88

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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.