Home / 2,869.78-4,304.10-1,309.36

Finding the Fourth Proportional to 2,869.78, 4,304.10 and 1,309.36

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Solution

The fourth proportional to 2,869.78, 4,304.10 and 1,309.36 is: 1,963.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.78 : 4,304.10 = 1,309.36 : x
  2. Step 2: Convert to fraction form
    2,869.78/4,304.10 = 1,309.36/x
  3. Step 3: Cross multiply
    2,869.78x = 4,304.10 × 1,309.36
  4. Step 4: Simplify right side
    2,869.78x = 5,635,616.38
  5. Step 5: Solve for x
    x = 5,635,616.38/2,869.78
  6. Step 6: Final answer
    x = 1,963.78

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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.