Home / 2,989.11-4,124.88-1,662.78

Finding the Fourth Proportional to 2,989.11, 4,124.88 and 1,662.78

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Solution

The fourth proportional to 2,989.11, 4,124.88 and 1,662.78 is: 2,294.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.11 : 4,124.88 = 1,662.78 : x
  2. Step 2: Convert to fraction form
    2,989.11/4,124.88 = 1,662.78/x
  3. Step 3: Cross multiply
    2,989.11x = 4,124.88 × 1,662.78
  4. Step 4: Simplify right side
    2,989.11x = 6,858,767.97
  5. Step 5: Solve for x
    x = 6,858,767.97/2,989.11
  6. Step 6: Final answer
    x = 2,294.59

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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.