Home / 2,764.88-4,148.16-1,121.12

Finding the Fourth Proportional to 2,764.88, 4,148.16 and 1,121.12

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Solution

The fourth proportional to 2,764.88, 4,148.16 and 1,121.12 is: 1,682.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.88 : 4,148.16 = 1,121.12 : x
  2. Step 2: Convert to fraction form
    2,764.88/4,148.16 = 1,121.12/x
  3. Step 3: Cross multiply
    2,764.88x = 4,148.16 × 1,121.12
  4. Step 4: Simplify right side
    2,764.88x = 4,650,585.14
  5. Step 5: Solve for x
    x = 4,650,585.14/2,764.88
  6. Step 6: Final answer
    x = 1,682.02

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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.