Home / 2,851.12-4,277.28-1,119.76

Finding the Fourth Proportional to 2,851.12, 4,277.28 and 1,119.76

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Solution

The fourth proportional to 2,851.12, 4,277.28 and 1,119.76 is: 1,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.12 : 4,277.28 = 1,119.76 : x
  2. Step 2: Convert to fraction form
    2,851.12/4,277.28 = 1,119.76/x
  3. Step 3: Cross multiply
    2,851.12x = 4,277.28 × 1,119.76
  4. Step 4: Simplify right side
    2,851.12x = 4,789,527.05
  5. Step 5: Solve for x
    x = 4,789,527.05/2,851.12
  6. Step 6: Final answer
    x = 1,679.88

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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.