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Finding the Fourth Proportional to 5,240.67, 7,231.67 and 2,882.90

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Solution

The fourth proportional to 5,240.67, 7,231.67 and 2,882.90 is: 3,978.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.67 : 7,231.67 = 2,882.90 : x
  2. Step 2: Convert to fraction form
    5,240.67/7,231.67 = 2,882.90/x
  3. Step 3: Cross multiply
    5,240.67x = 7,231.67 × 2,882.90
  4. Step 4: Simplify right side
    5,240.67x = 20,848,130.87
  5. Step 5: Solve for x
    x = 20,848,130.87/5,240.67
  6. Step 6: Final answer
    x = 3,978.14

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1.5x scale

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.