Home / 2,086.24-3,129.40-625.36

Finding the Fourth Proportional to 2,086.24, 3,129.40 and 625.36

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Solution

The fourth proportional to 2,086.24, 3,129.40 and 625.36 is: 938.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.24 : 3,129.40 = 625.36 : x
  2. Step 2: Convert to fraction form
    2,086.24/3,129.40 = 625.36/x
  3. Step 3: Cross multiply
    2,086.24x = 3,129.40 × 625.36
  4. Step 4: Simplify right side
    2,086.24x = 1,957,001.58
  5. Step 5: Solve for x
    x = 1,957,001.58/2,086.24
  6. Step 6: Final answer
    x = 938.05

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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.