Home / 2,279.40-3,419.30-1,030.78

Finding the Fourth Proportional to 2,279.40, 3,419.30 and 1,030.78

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Solution

The fourth proportional to 2,279.40, 3,419.30 and 1,030.78 is: 1,546.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.40 : 3,419.30 = 1,030.78 : x
  2. Step 2: Convert to fraction form
    2,279.40/3,419.30 = 1,030.78/x
  3. Step 3: Cross multiply
    2,279.40x = 3,419.30 × 1,030.78
  4. Step 4: Simplify right side
    2,279.40x = 3,524,546.05
  5. Step 5: Solve for x
    x = 3,524,546.05/2,279.40
  6. Step 6: Final answer
    x = 1,546.26

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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.