Home / 2,125.11-3,187.65-1,851.39

Finding the Fourth Proportional to 2,125.11, 3,187.65 and 1,851.39

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Solution

The fourth proportional to 2,125.11, 3,187.65 and 1,851.39 is: 2,777.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.11 : 3,187.65 = 1,851.39 : x
  2. Step 2: Convert to fraction form
    2,125.11/3,187.65 = 1,851.39/x
  3. Step 3: Cross multiply
    2,125.11x = 3,187.65 × 1,851.39
  4. Step 4: Simplify right side
    2,125.11x = 5,901,583.33
  5. Step 5: Solve for x
    x = 5,901,583.33/2,125.11
  6. Step 6: Final answer
    x = 2,777.07

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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.