Home / 1,687.89-2,329.35-941.85

Finding the Fourth Proportional to 1,687.89, 2,329.35 and 941.85

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Solution

The fourth proportional to 1,687.89, 2,329.35 and 941.85 is: 1,299.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.89 : 2,329.35 = 941.85 : x
  2. Step 2: Convert to fraction form
    1,687.89/2,329.35 = 941.85/x
  3. Step 3: Cross multiply
    1,687.89x = 2,329.35 × 941.85
  4. Step 4: Simplify right side
    1,687.89x = 2,193,898.30
  5. Step 5: Solve for x
    x = 2,193,898.30/1,687.89
  6. Step 6: Final answer
    x = 1,299.79

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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.