Home / 4,279.92-6,420.10-1,358.44

Finding the Fourth Proportional to 4,279.92, 6,420.10 and 1,358.44

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Solution

The fourth proportional to 4,279.92, 6,420.10 and 1,358.44 is: 2,037.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.92 : 6,420.10 = 1,358.44 : x
  2. Step 2: Convert to fraction form
    4,279.92/6,420.10 = 1,358.44/x
  3. Step 3: Cross multiply
    4,279.92x = 6,420.10 × 1,358.44
  4. Step 4: Simplify right side
    4,279.92x = 8,721,320.64
  5. Step 5: Solve for x
    x = 8,721,320.64/4,279.92
  6. Step 6: Final answer
    x = 2,037.73

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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.