Home / 3,723.51-5,138.45-2,151.61

Finding the Fourth Proportional to 3,723.51, 5,138.45 and 2,151.61

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Solution

The fourth proportional to 3,723.51, 5,138.45 and 2,151.61 is: 2,969.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.51 : 5,138.45 = 2,151.61 : x
  2. Step 2: Convert to fraction form
    3,723.51/5,138.45 = 2,151.61/x
  3. Step 3: Cross multiply
    3,723.51x = 5,138.45 × 2,151.61
  4. Step 4: Simplify right side
    3,723.51x = 11,055,914.71
  5. Step 5: Solve for x
    x = 11,055,914.71/3,723.51
  6. Step 6: Final answer
    x = 2,969.22

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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.