Home / 1,612.40-2,224.92-913.76

Finding the Fourth Proportional to 1,612.40, 2,224.92 and 913.76

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Solution

The fourth proportional to 1,612.40, 2,224.92 and 913.76 is: 1,260.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.40 : 2,224.92 = 913.76 : x
  2. Step 2: Convert to fraction form
    1,612.40/2,224.92 = 913.76/x
  3. Step 3: Cross multiply
    1,612.40x = 2,224.92 × 913.76
  4. Step 4: Simplify right side
    1,612.40x = 2,033,042.90
  5. Step 5: Solve for x
    x = 2,033,042.90/1,612.40
  6. Step 6: Final answer
    x = 1,260.88

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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.