Home / 2,218.36-3,062.76-1,380.20

Finding the Fourth Proportional to 2,218.36, 3,062.76 and 1,380.20

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Solution

The fourth proportional to 2,218.36, 3,062.76 and 1,380.20 is: 1,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.36 : 3,062.76 = 1,380.20 : x
  2. Step 2: Convert to fraction form
    2,218.36/3,062.76 = 1,380.20/x
  3. Step 3: Cross multiply
    2,218.36x = 3,062.76 × 1,380.20
  4. Step 4: Simplify right side
    2,218.36x = 4,227,221.35
  5. Step 5: Solve for x
    x = 4,227,221.35/2,218.36
  6. Step 6: Final answer
    x = 1,905.56

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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.