Home / 2,275.29-3,138.75-1,612.44

Finding the Fourth Proportional to 2,275.29, 3,138.75 and 1,612.44

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Solution

The fourth proportional to 2,275.29, 3,138.75 and 1,612.44 is: 2,224.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.29 : 3,138.75 = 1,612.44 : x
  2. Step 2: Convert to fraction form
    2,275.29/3,138.75 = 1,612.44/x
  3. Step 3: Cross multiply
    2,275.29x = 3,138.75 × 1,612.44
  4. Step 4: Simplify right side
    2,275.29x = 5,061,046.05
  5. Step 5: Solve for x
    x = 5,061,046.05/2,275.29
  6. Step 6: Final answer
    x = 2,224.35

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.