Home / 1,247.43-1,871.34-974.04

Finding the Fourth Proportional to 1,247.43, 1,871.34 and 974.04

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Solution

The fourth proportional to 1,247.43, 1,871.34 and 974.04 is: 1,461.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.43 : 1,871.34 = 974.04 : x
  2. Step 2: Convert to fraction form
    1,247.43/1,871.34 = 974.04/x
  3. Step 3: Cross multiply
    1,247.43x = 1,871.34 × 974.04
  4. Step 4: Simplify right side
    1,247.43x = 1,822,760.01
  5. Step 5: Solve for x
    x = 1,822,760.01/1,247.43
  6. Step 6: Final answer
    x = 1,461.21

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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.