Home / 2,140.38-3,211.29-1,165.95

Finding the Fourth Proportional to 2,140.38, 3,211.29 and 1,165.95

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Solution

The fourth proportional to 2,140.38, 3,211.29 and 1,165.95 is: 1,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.38 : 3,211.29 = 1,165.95 : x
  2. Step 2: Convert to fraction form
    2,140.38/3,211.29 = 1,165.95/x
  3. Step 3: Cross multiply
    2,140.38x = 3,211.29 × 1,165.95
  4. Step 4: Simplify right side
    2,140.38x = 3,744,203.58
  5. Step 5: Solve for x
    x = 3,744,203.58/2,140.38
  6. Step 6: Final answer
    x = 1,749.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.