Home / 2,619.88-3,935.28-2,229.76

Finding the Fourth Proportional to 2,619.88, 3,935.28 and 2,229.76

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Solution

The fourth proportional to 2,619.88, 3,935.28 and 2,229.76 is: 3,349.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.88 : 3,935.28 = 2,229.76 : x
  2. Step 2: Convert to fraction form
    2,619.88/3,935.28 = 2,229.76/x
  3. Step 3: Cross multiply
    2,619.88x = 3,935.28 × 2,229.76
  4. Step 4: Simplify right side
    2,619.88x = 8,774,729.93
  5. Step 5: Solve for x
    x = 8,774,729.93/2,619.88
  6. Step 6: Final answer
    x = 3,349.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.