Home / 5,250.75-7,877.21-2,172.75

Finding the Fourth Proportional to 5,250.75, 7,877.21 and 2,172.75

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Solution

The fourth proportional to 5,250.75, 7,877.21 and 2,172.75 is: 3,259.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,250.75 : 7,877.21 = 2,172.75 : x
  2. Step 2: Convert to fraction form
    5,250.75/7,877.21 = 2,172.75/x
  3. Step 3: Cross multiply
    5,250.75x = 7,877.21 × 2,172.75
  4. Step 4: Simplify right side
    5,250.75x = 17,115,197.16
  5. Step 5: Solve for x
    x = 17,115,197.16/5,250.75
  6. Step 6: Final answer
    x = 3,259.57

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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.