Home / 2,127.78-3,187.05-1,029.84

Finding the Fourth Proportional to 2,127.78, 3,187.05 and 1,029.84

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Solution

The fourth proportional to 2,127.78, 3,187.05 and 1,029.84 is: 1,542.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.78 : 3,187.05 = 1,029.84 : x
  2. Step 2: Convert to fraction form
    2,127.78/3,187.05 = 1,029.84/x
  3. Step 3: Cross multiply
    2,127.78x = 3,187.05 × 1,029.84
  4. Step 4: Simplify right side
    2,127.78x = 3,282,151.57
  5. Step 5: Solve for x
    x = 3,282,151.57/2,127.78
  6. Step 6: Final answer
    x = 1,542.52

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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.