Home / 2,921.96-4,031.57-1,726.97

Finding the Fourth Proportional to 2,921.96, 4,031.57 and 1,726.97

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Solution

The fourth proportional to 2,921.96, 4,031.57 and 1,726.97 is: 2,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.96 : 4,031.57 = 1,726.97 : x
  2. Step 2: Convert to fraction form
    2,921.96/4,031.57 = 1,726.97/x
  3. Step 3: Cross multiply
    2,921.96x = 4,031.57 × 1,726.97
  4. Step 4: Simplify right side
    2,921.96x = 6,962,371.65
  5. Step 5: Solve for x
    x = 6,962,371.65/2,921.96
  6. Step 6: Final answer
    x = 2,382.78

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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.