Home / 2,832.80-4,251.60-1,275.20

Finding the Fourth Proportional to 2,832.80, 4,251.60 and 1,275.20

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Solution

The fourth proportional to 2,832.80, 4,251.60 and 1,275.20 is: 1,913.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,832.80 : 4,251.60 = 1,275.20 : x
  2. Step 2: Convert to fraction form
    2,832.80/4,251.60 = 1,275.20/x
  3. Step 3: Cross multiply
    2,832.80x = 4,251.60 × 1,275.20
  4. Step 4: Simplify right side
    2,832.80x = 5,421,640.32
  5. Step 5: Solve for x
    x = 5,421,640.32/2,832.80
  6. Step 6: Final answer
    x = 1,913.88

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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.