Home / 2,087.38-3,129.54-1,265.68

Finding the Fourth Proportional to 2,087.38, 3,129.54 and 1,265.68

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Solution

The fourth proportional to 2,087.38, 3,129.54 and 1,265.68 is: 1,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.38 : 3,129.54 = 1,265.68 : x
  2. Step 2: Convert to fraction form
    2,087.38/3,129.54 = 1,265.68/x
  3. Step 3: Cross multiply
    2,087.38x = 3,129.54 × 1,265.68
  4. Step 4: Simplify right side
    2,087.38x = 3,960,996.19
  5. Step 5: Solve for x
    x = 3,960,996.19/2,087.38
  6. Step 6: Final answer
    x = 1,897.59

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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.