Home / 2,921.85-4,031.11-1,726.58

Finding the Fourth Proportional to 2,921.85, 4,031.11 and 1,726.58

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Solution

The fourth proportional to 2,921.85, 4,031.11 and 1,726.58 is: 2,382.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.85 : 4,031.11 = 1,726.58 : x
  2. Step 2: Convert to fraction form
    2,921.85/4,031.11 = 1,726.58/x
  3. Step 3: Cross multiply
    2,921.85x = 4,031.11 × 1,726.58
  4. Step 4: Simplify right side
    2,921.85x = 6,960,039.67
  5. Step 5: Solve for x
    x = 6,960,039.67/2,921.85
  6. Step 6: Final answer
    x = 2,382.07

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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.