Home / 3,940.16-5,432.80-2,943.68

Finding the Fourth Proportional to 3,940.16, 5,432.80 and 2,943.68

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Solution

The fourth proportional to 3,940.16, 5,432.80 and 2,943.68 is: 4,058.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.16 : 5,432.80 = 2,943.68 : x
  2. Step 2: Convert to fraction form
    3,940.16/5,432.80 = 2,943.68/x
  3. Step 3: Cross multiply
    3,940.16x = 5,432.80 × 2,943.68
  4. Step 4: Simplify right side
    3,940.16x = 15,992,424.70
  5. Step 5: Solve for x
    x = 15,992,424.70/3,940.16
  6. Step 6: Final answer
    x = 4,058.83

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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.