Home / 3,721.80-5,134.47-2,305.11

Finding the Fourth Proportional to 3,721.80, 5,134.47 and 2,305.11

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Solution

The fourth proportional to 3,721.80, 5,134.47 and 2,305.11 is: 3,180.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.80 : 5,134.47 = 2,305.11 : x
  2. Step 2: Convert to fraction form
    3,721.80/5,134.47 = 2,305.11/x
  3. Step 3: Cross multiply
    3,721.80x = 5,134.47 × 2,305.11
  4. Step 4: Simplify right side
    3,721.80x = 11,835,518.14
  5. Step 5: Solve for x
    x = 11,835,518.14/3,721.80
  6. Step 6: Final answer
    x = 3,180.05

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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.