Home / 5,187.68-7,156.95-3,194.78

Finding the Fourth Proportional to 5,187.68, 7,156.95 and 3,194.78

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Solution

The fourth proportional to 5,187.68, 7,156.95 and 3,194.78 is: 4,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.68 : 7,156.95 = 3,194.78 : x
  2. Step 2: Convert to fraction form
    5,187.68/7,156.95 = 3,194.78/x
  3. Step 3: Cross multiply
    5,187.68x = 7,156.95 × 3,194.78
  4. Step 4: Simplify right side
    5,187.68x = 22,864,844.94
  5. Step 5: Solve for x
    x = 22,864,844.94/5,187.68
  6. Step 6: Final answer
    x = 4,407.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.