Home / 3,427.11-5,142.79-1,578.49

Finding the Fourth Proportional to 3,427.11, 5,142.79 and 1,578.49

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Solution

The fourth proportional to 3,427.11, 5,142.79 and 1,578.49 is: 2,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.11 : 5,142.79 = 1,578.49 : x
  2. Step 2: Convert to fraction form
    3,427.11/5,142.79 = 1,578.49/x
  3. Step 3: Cross multiply
    3,427.11x = 5,142.79 × 1,578.49
  4. Step 4: Simplify right side
    3,427.11x = 8,117,831.70
  5. Step 5: Solve for x
    x = 8,117,831.70/3,427.11
  6. Step 6: Final answer
    x = 2,368.71

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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.