Home / 2,218.10-3,059.91-1,378.53

Finding the Fourth Proportional to 2,218.10, 3,059.91 and 1,378.53

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Solution

The fourth proportional to 2,218.10, 3,059.91 and 1,378.53 is: 1,901.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.10 : 3,059.91 = 1,378.53 : x
  2. Step 2: Convert to fraction form
    2,218.10/3,059.91 = 1,378.53/x
  3. Step 3: Cross multiply
    2,218.10x = 3,059.91 × 1,378.53
  4. Step 4: Simplify right side
    2,218.10x = 4,218,177.73
  5. Step 5: Solve for x
    x = 4,218,177.73/2,218.10
  6. Step 6: Final answer
    x = 1,901.71

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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.