Home / 2,185.36-3,278.05-625.39

Finding the Fourth Proportional to 2,185.36, 3,278.05 and 625.39

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Solution

The fourth proportional to 2,185.36, 3,278.05 and 625.39 is: 938.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.36 : 3,278.05 = 625.39 : x
  2. Step 2: Convert to fraction form
    2,185.36/3,278.05 = 625.39/x
  3. Step 3: Cross multiply
    2,185.36x = 3,278.05 × 625.39
  4. Step 4: Simplify right side
    2,185.36x = 2,050,049.93
  5. Step 5: Solve for x
    x = 2,050,049.93/2,185.36
  6. Step 6: Final answer
    x = 938.08

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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.