Home / 4,279.29-6,419.11-1,357.80

Finding the Fourth Proportional to 4,279.29, 6,419.11 and 1,357.80

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Solution

The fourth proportional to 4,279.29, 6,419.11 and 1,357.80 is: 2,036.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.29 : 6,419.11 = 1,357.80 : x
  2. Step 2: Convert to fraction form
    4,279.29/6,419.11 = 1,357.80/x
  3. Step 3: Cross multiply
    4,279.29x = 6,419.11 × 1,357.80
  4. Step 4: Simplify right side
    4,279.29x = 8,715,867.56
  5. Step 5: Solve for x
    x = 8,715,867.56/4,279.29
  6. Step 6: Final answer
    x = 2,036.76

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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.