Home / 3,378.59-5,063.56-1,428.11

Finding the Fourth Proportional to 3,378.59, 5,063.56 and 1,428.11

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Solution

The fourth proportional to 3,378.59, 5,063.56 and 1,428.11 is: 2,140.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.59 : 5,063.56 = 1,428.11 : x
  2. Step 2: Convert to fraction form
    3,378.59/5,063.56 = 1,428.11/x
  3. Step 3: Cross multiply
    3,378.59x = 5,063.56 × 1,428.11
  4. Step 4: Simplify right side
    3,378.59x = 7,231,291.78
  5. Step 5: Solve for x
    x = 7,231,291.78/3,378.59
  6. Step 6: Final answer
    x = 2,140.33

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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.