Home / 2,851.20-4,278.42-2,238.84

Finding the Fourth Proportional to 2,851.20, 4,278.42 and 2,238.84

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Solution

The fourth proportional to 2,851.20, 4,278.42 and 2,238.84 is: 3,359.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.20 : 4,278.42 = 2,238.84 : x
  2. Step 2: Convert to fraction form
    2,851.20/4,278.42 = 2,238.84/x
  3. Step 3: Cross multiply
    2,851.20x = 4,278.42 × 2,238.84
  4. Step 4: Simplify right side
    2,851.20x = 9,578,697.83
  5. Step 5: Solve for x
    x = 9,578,697.83/2,851.20
  6. Step 6: Final answer
    x = 3,359.53

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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.