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Finding the Fourth Proportional to 5,223.72, 7,837.21 and 1,713.76

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Solution

The fourth proportional to 5,223.72, 7,837.21 and 1,713.76 is: 2,571.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,223.72 : 7,837.21 = 1,713.76 : x
  2. Step 2: Convert to fraction form
    5,223.72/7,837.21 = 1,713.76/x
  3. Step 3: Cross multiply
    5,223.72x = 7,837.21 × 1,713.76
  4. Step 4: Simplify right side
    5,223.72x = 13,431,079.56
  5. Step 5: Solve for x
    x = 13,431,079.56/5,223.72
  6. Step 6: Final answer
    x = 2,571.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.