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Finding the Fourth Proportional to 5,223.51, 7,208.39 and 2,865.65

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Solution

The fourth proportional to 5,223.51, 7,208.39 and 2,865.65 is: 3,954.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,223.51 : 7,208.39 = 2,865.65 : x
  2. Step 2: Convert to fraction form
    5,223.51/7,208.39 = 2,865.65/x
  3. Step 3: Cross multiply
    5,223.51x = 7,208.39 × 2,865.65
  4. Step 4: Simplify right side
    5,223.51x = 20,656,672.43
  5. Step 5: Solve for x
    x = 20,656,672.43/5,223.51
  6. Step 6: Final answer
    x = 3,954.56

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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.