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Finding the Fourth Proportional to 3,098.70, 4,648.50 and 1,124.46

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Solution

The fourth proportional to 3,098.70, 4,648.50 and 1,124.46 is: 1,686.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.70 : 4,648.50 = 1,124.46 : x
  2. Step 2: Convert to fraction form
    3,098.70/4,648.50 = 1,124.46/x
  3. Step 3: Cross multiply
    3,098.70x = 4,648.50 × 1,124.46
  4. Step 4: Simplify right side
    3,098.70x = 5,227,052.31
  5. Step 5: Solve for x
    x = 5,227,052.31/3,098.70
  6. Step 6: Final answer
    x = 1,686.85

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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.