Home / 1,114.20-1,537.38-648.18

Finding the Fourth Proportional to 1,114.20, 1,537.38 and 648.18

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Solution

The fourth proportional to 1,114.20, 1,537.38 and 648.18 is: 894.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114.20 : 1,537.38 = 648.18 : x
  2. Step 2: Convert to fraction form
    1,114.20/1,537.38 = 648.18/x
  3. Step 3: Cross multiply
    1,114.20x = 1,537.38 × 648.18
  4. Step 4: Simplify right side
    1,114.20x = 996,498.97
  5. Step 5: Solve for x
    x = 996,498.97/1,114.20
  6. Step 6: Final answer
    x = 894.36

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1.5x scale

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.