Home / 1,687.96-2,329.28-941.92

Finding the Fourth Proportional to 1,687.96, 2,329.28 and 941.92

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Solution

The fourth proportional to 1,687.96, 2,329.28 and 941.92 is: 1,299.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.96 : 2,329.28 = 941.92 : x
  2. Step 2: Convert to fraction form
    1,687.96/2,329.28 = 941.92/x
  3. Step 3: Cross multiply
    1,687.96x = 2,329.28 × 941.92
  4. Step 4: Simplify right side
    1,687.96x = 2,193,995.42
  5. Step 5: Solve for x
    x = 2,193,995.42/1,687.96
  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.