Home / 4,151.20-6,226.80-1,378.30

Finding the Fourth Proportional to 4,151.20, 6,226.80 and 1,378.30

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Solution

The fourth proportional to 4,151.20, 6,226.80 and 1,378.30 is: 2,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,151.20 : 6,226.80 = 1,378.30 : x
  2. Step 2: Convert to fraction form
    4,151.20/6,226.80 = 1,378.30/x
  3. Step 3: Cross multiply
    4,151.20x = 6,226.80 × 1,378.30
  4. Step 4: Simplify right side
    4,151.20x = 8,582,398.44
  5. Step 5: Solve for x
    x = 8,582,398.44/4,151.20
  6. Step 6: Final answer
    x = 2,067.45

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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.