Home / 2,218.28-3,059.87-1,321.42

Finding the Fourth Proportional to 2,218.28, 3,059.87 and 1,321.42

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Solution

The fourth proportional to 2,218.28, 3,059.87 and 1,321.42 is: 1,822.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.28 : 3,059.87 = 1,321.42 : x
  2. Step 2: Convert to fraction form
    2,218.28/3,059.87 = 1,321.42/x
  3. Step 3: Cross multiply
    2,218.28x = 3,059.87 × 1,321.42
  4. Step 4: Simplify right side
    2,218.28x = 4,043,373.42
  5. Step 5: Solve for x
    x = 4,043,373.42/2,218.28
  6. Step 6: Final answer
    x = 1,822.75

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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.