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Finding the Fourth Proportional to 7,144.77, 10,720.05 and 3,251.01

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Solution

The fourth proportional to 7,144.77, 10,720.05 and 3,251.01 is: 4,877.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.77 : 10,720.05 = 3,251.01 : x
  2. Step 2: Convert to fraction form
    7,144.77/10,720.05 = 3,251.01/x
  3. Step 3: Cross multiply
    7,144.77x = 10,720.05 × 3,251.01
  4. Step 4: Simplify right side
    7,144.77x = 34,850,989.75
  5. Step 5: Solve for x
    x = 34,850,989.75/7,144.77
  6. Step 6: Final answer
    x = 4,877.83

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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.