Home / 3,402.31-5,101.26-1,428.88

Finding the Fourth Proportional to 3,402.31, 5,101.26 and 1,428.88

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Solution

The fourth proportional to 3,402.31, 5,101.26 and 1,428.88 is: 2,142.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,402.31 : 5,101.26 = 1,428.88 : x
  2. Step 2: Convert to fraction form
    3,402.31/5,101.26 = 1,428.88/x
  3. Step 3: Cross multiply
    3,402.31x = 5,101.26 × 1,428.88
  4. Step 4: Simplify right side
    3,402.31x = 7,289,088.39
  5. Step 5: Solve for x
    x = 7,289,088.39/3,402.31
  6. Step 6: Final answer
    x = 2,142.39

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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.