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Finding the Fourth Proportional to 2,724.80, 3,806.50 and 2,724.80

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Solution

The fourth proportional to 2,724.80, 3,806.50 and 2,724.80 is: 3,806.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,724.80 : 3,806.50 = 2,724.80 : x
  2. Step 2: Convert to fraction form
    2,724.80/3,806.50 = 2,724.80/x
  3. Step 3: Cross multiply
    2,724.80x = 3,806.50 × 2,724.80
  4. Step 4: Simplify right side
    2,724.80x = 10,371,951.20
  5. Step 5: Solve for x
    x = 10,371,951.20/2,724.80
  6. Step 6: Final answer
    x = 3,806.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.