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Finding the Fourth Proportional to 5,251.67, 7,872.63 and 1,962.26

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Solution

The fourth proportional to 5,251.67, 7,872.63 and 1,962.26 is: 2,941.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.67 : 7,872.63 = 1,962.26 : x
  2. Step 2: Convert to fraction form
    5,251.67/7,872.63 = 1,962.26/x
  3. Step 3: Cross multiply
    5,251.67x = 7,872.63 × 1,962.26
  4. Step 4: Simplify right side
    5,251.67x = 15,448,107.58
  5. Step 5: Solve for x
    x = 15,448,107.58/5,251.67
  6. Step 6: Final answer
    x = 2,941.56

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1.5x scale

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.