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Finding the Fourth Proportional to 7,209.92, 10,812.16 and 2,528.48

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Solution

The fourth proportional to 7,209.92, 10,812.16 and 2,528.48 is: 3,791.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.92 : 10,812.16 = 2,528.48 : x
  2. Step 2: Convert to fraction form
    7,209.92/10,812.16 = 2,528.48/x
  3. Step 3: Cross multiply
    7,209.92x = 10,812.16 × 2,528.48
  4. Step 4: Simplify right side
    7,209.92x = 27,338,330.32
  5. Step 5: Solve for x
    x = 27,338,330.32/7,209.92
  6. Step 6: Final answer
    x = 3,791.77

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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.