Home / 3,712.86-5,122.26-2,140.11

Finding the Fourth Proportional to 3,712.86, 5,122.26 and 2,140.11

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Solution

The fourth proportional to 3,712.86, 5,122.26 and 2,140.11 is: 2,952.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.86 : 5,122.26 = 2,140.11 : x
  2. Step 2: Convert to fraction form
    3,712.86/5,122.26 = 2,140.11/x
  3. Step 3: Cross multiply
    3,712.86x = 5,122.26 × 2,140.11
  4. Step 4: Simplify right side
    3,712.86x = 10,962,199.85
  5. Step 5: Solve for x
    x = 10,962,199.85/3,712.86
  6. Step 6: Final answer
    x = 2,952.49

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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.