Home / 1,695.89-2,340.31-949.85

Finding the Fourth Proportional to 1,695.89, 2,340.31 and 949.85

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Solution

The fourth proportional to 1,695.89, 2,340.31 and 949.85 is: 1,310.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.89 : 2,340.31 = 949.85 : x
  2. Step 2: Convert to fraction form
    1,695.89/2,340.31 = 949.85/x
  3. Step 3: Cross multiply
    1,695.89x = 2,340.31 × 949.85
  4. Step 4: Simplify right side
    1,695.89x = 2,222,943.45
  5. Step 5: Solve for x
    x = 2,222,943.45/1,695.89
  6. Step 6: Final answer
    x = 1,310.78

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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.