Home / 1,966.40-2,945.76-1,279.04

Finding the Fourth Proportional to 1,966.40, 2,945.76 and 1,279.04

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Solution

The fourth proportional to 1,966.40, 2,945.76 and 1,279.04 is: 1,916.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.40 : 2,945.76 = 1,279.04 : x
  2. Step 2: Convert to fraction form
    1,966.40/2,945.76 = 1,279.04/x
  3. Step 3: Cross multiply
    1,966.40x = 2,945.76 × 1,279.04
  4. Step 4: Simplify right side
    1,966.40x = 3,767,744.87
  5. Step 5: Solve for x
    x = 3,767,744.87/1,966.40
  6. Step 6: Final answer
    x = 1,916.06

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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.