Home / 2,954.13-4,428.68-1,309.78

Finding the Fourth Proportional to 2,954.13, 4,428.68 and 1,309.78

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Solution

The fourth proportional to 2,954.13, 4,428.68 and 1,309.78 is: 1,963.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.13 : 4,428.68 = 1,309.78 : x
  2. Step 2: Convert to fraction form
    2,954.13/4,428.68 = 1,309.78/x
  3. Step 3: Cross multiply
    2,954.13x = 4,428.68 × 1,309.78
  4. Step 4: Simplify right side
    2,954.13x = 5,800,578.87
  5. Step 5: Solve for x
    x = 5,800,578.87/2,954.13
  6. Step 6: Final answer
    x = 1,963.55

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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.