Home / 3,428.12-5,142.60-1,087.49

Finding the Fourth Proportional to 3,428.12, 5,142.60 and 1,087.49

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Solution

The fourth proportional to 3,428.12, 5,142.60 and 1,087.49 is: 1,631.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.12 : 5,142.60 = 1,087.49 : x
  2. Step 2: Convert to fraction form
    3,428.12/5,142.60 = 1,087.49/x
  3. Step 3: Cross multiply
    3,428.12x = 5,142.60 × 1,087.49
  4. Step 4: Simplify right side
    3,428.12x = 5,592,500.36
  5. Step 5: Solve for x
    x = 5,592,500.36/3,428.12
  6. Step 6: Final answer
    x = 1,631.36

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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.