Home / 3,991.19-5,508.25-2,312.53

Finding the Fourth Proportional to 3,991.19, 5,508.25 and 2,312.53

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Solution

The fourth proportional to 3,991.19, 5,508.25 and 2,312.53 is: 3,191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.19 : 5,508.25 = 2,312.53 : x
  2. Step 2: Convert to fraction form
    3,991.19/5,508.25 = 2,312.53/x
  3. Step 3: Cross multiply
    3,991.19x = 5,508.25 × 2,312.53
  4. Step 4: Simplify right side
    3,991.19x = 12,737,973.82
  5. Step 5: Solve for x
    x = 12,737,973.82/3,991.19
  6. Step 6: Final answer
    x = 3,191.53

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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.