Home / 1,452.10-2,179.05-1,121.76

Finding the Fourth Proportional to 1,452.10, 2,179.05 and 1,121.76

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Solution

The fourth proportional to 1,452.10, 2,179.05 and 1,121.76 is: 1,683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.10 : 2,179.05 = 1,121.76 : x
  2. Step 2: Convert to fraction form
    1,452.10/2,179.05 = 1,121.76/x
  3. Step 3: Cross multiply
    1,452.10x = 2,179.05 × 1,121.76
  4. Step 4: Simplify right side
    1,452.10x = 2,444,371.13
  5. Step 5: Solve for x
    x = 2,444,371.13/1,452.10
  6. Step 6: Final answer
    x = 1,683.34

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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.