Home / 2,279.24-3,419.46-818.40

Finding the Fourth Proportional to 2,279.24, 3,419.46 and 818.40

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Solution

The fourth proportional to 2,279.24, 3,419.46 and 818.40 is: 1,227.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.24 : 3,419.46 = 818.40 : x
  2. Step 2: Convert to fraction form
    2,279.24/3,419.46 = 818.40/x
  3. Step 3: Cross multiply
    2,279.24x = 3,419.46 × 818.40
  4. Step 4: Simplify right side
    2,279.24x = 2,798,486.06
  5. Step 5: Solve for x
    x = 2,798,486.06/2,279.24
  6. Step 6: Final answer
    x = 1,227.82

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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.