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Finding the Fourth Proportional to 5,122.92, 7,069.98 and 2,885

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Solution

The fourth proportional to 5,122.92, 7,069.98 and 2,885 is: 3,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.92 : 7,069.98 = 2,885 : x
  2. Step 2: Convert to fraction form
    5,122.92/7,069.98 = 2,885/x
  3. Step 3: Cross multiply
    5,122.92x = 7,069.98 × 2,885
  4. Step 4: Simplify right side
    5,122.92x = 20,396,892.30
  5. Step 5: Solve for x
    x = 20,396,892.30/5,122.92
  6. Step 6: Final answer
    x = 3,981.50

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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.