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Finding the Fourth Proportional to 7,277.92, 10,921.92 and 2,894.92

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Solution

The fourth proportional to 7,277.92, 10,921.92 and 2,894.92 is: 4,344.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,277.92 : 10,921.92 = 2,894.92 : x
  2. Step 2: Convert to fraction form
    7,277.92/10,921.92 = 2,894.92/x
  3. Step 3: Cross multiply
    7,277.92x = 10,921.92 × 2,894.92
  4. Step 4: Simplify right side
    7,277.92x = 31,618,084.65
  5. Step 5: Solve for x
    x = 31,618,084.65/7,277.92
  6. Step 6: Final answer
    x = 4,344.38

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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.