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Finding the Fourth Proportional to 2,974.92, 4,461.48 and 1,124.64

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Solution

The fourth proportional to 2,974.92, 4,461.48 and 1,124.64 is: 1,686.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.92 : 4,461.48 = 1,124.64 : x
  2. Step 2: Convert to fraction form
    2,974.92/4,461.48 = 1,124.64/x
  3. Step 3: Cross multiply
    2,974.92x = 4,461.48 × 1,124.64
  4. Step 4: Simplify right side
    2,974.92x = 5,017,558.87
  5. Step 5: Solve for x
    x = 5,017,558.87/2,974.92
  6. Step 6: Final answer
    x = 1,686.62

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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.