Home / 1,146.10-1,581.42-648.66

Finding the Fourth Proportional to 1,146.10, 1,581.42 and 648.66

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Solution

The fourth proportional to 1,146.10, 1,581.42 and 648.66 is: 895.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.10 : 1,581.42 = 648.66 : x
  2. Step 2: Convert to fraction form
    1,146.10/1,581.42 = 648.66/x
  3. Step 3: Cross multiply
    1,146.10x = 1,581.42 × 648.66
  4. Step 4: Simplify right side
    1,146.10x = 1,025,803.90
  5. Step 5: Solve for x
    x = 1,025,803.90/1,146.10
  6. Step 6: Final answer
    x = 895.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.