Home / 4,278.68-6,418.20-1,357.20

Finding the Fourth Proportional to 4,278.68, 6,418.20 and 1,357.20

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Solution

The fourth proportional to 4,278.68, 6,418.20 and 1,357.20 is: 2,035.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.68 : 6,418.20 = 1,357.20 : x
  2. Step 2: Convert to fraction form
    4,278.68/6,418.20 = 1,357.20/x
  3. Step 3: Cross multiply
    4,278.68x = 6,418.20 × 1,357.20
  4. Step 4: Simplify right side
    4,278.68x = 8,710,781.04
  5. Step 5: Solve for x
    x = 8,710,781.04/4,278.68
  6. Step 6: Final answer
    x = 2,035.86

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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.