Home / 4,279.38-6,420.11-1,357.71

Finding the Fourth Proportional to 4,279.38, 6,420.11 and 1,357.71

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Solution

The fourth proportional to 4,279.38, 6,420.11 and 1,357.71 is: 2,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.38 : 6,420.11 = 1,357.71 : x
  2. Step 2: Convert to fraction form
    4,279.38/6,420.11 = 1,357.71/x
  3. Step 3: Cross multiply
    4,279.38x = 6,420.11 × 1,357.71
  4. Step 4: Simplify right side
    4,279.38x = 8,716,660.43
  5. Step 5: Solve for x
    x = 8,716,660.43/4,279.38
  6. Step 6: Final answer
    x = 2,036.90

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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.