Home / 5,105.51-7,045.76-2,867.43

Finding the Fourth Proportional to 5,105.51, 7,045.76 and 2,867.43

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Solution

The fourth proportional to 5,105.51, 7,045.76 and 2,867.43 is: 3,957.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.51 : 7,045.76 = 2,867.43 : x
  2. Step 2: Convert to fraction form
    5,105.51/7,045.76 = 2,867.43/x
  3. Step 3: Cross multiply
    5,105.51x = 7,045.76 × 2,867.43
  4. Step 4: Simplify right side
    5,105.51x = 20,203,209.26
  5. Step 5: Solve for x
    x = 20,203,209.26/5,105.51
  6. Step 6: Final answer
    x = 3,957.14

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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.