Home / 1,639.75-2,262.96-941.17

Finding the Fourth Proportional to 1,639.75, 2,262.96 and 941.17

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Solution

The fourth proportional to 1,639.75, 2,262.96 and 941.17 is: 1,298.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.75 : 2,262.96 = 941.17 : x
  2. Step 2: Convert to fraction form
    1,639.75/2,262.96 = 941.17/x
  3. Step 3: Cross multiply
    1,639.75x = 2,262.96 × 941.17
  4. Step 4: Simplify right side
    1,639.75x = 2,129,830.06
  5. Step 5: Solve for x
    x = 2,129,830.06/1,639.75
  6. Step 6: Final answer
    x = 1,298.87

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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.