Home / 2,275.20-3,412.80-1,947.15

Finding the Fourth Proportional to 2,275.20, 3,412.80 and 1,947.15

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Solution

The fourth proportional to 2,275.20, 3,412.80 and 1,947.15 is: 2,920.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.20 : 3,412.80 = 1,947.15 : x
  2. Step 2: Convert to fraction form
    2,275.20/3,412.80 = 1,947.15/x
  3. Step 3: Cross multiply
    2,275.20x = 3,412.80 × 1,947.15
  4. Step 4: Simplify right side
    2,275.20x = 6,645,233.52
  5. Step 5: Solve for x
    x = 6,645,233.52/2,275.20
  6. Step 6: Final answer
    x = 2,920.73

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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.