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Finding the Fourth Proportional to 7,292.64, 10,092.72 and 7,117.92

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Solution

The fourth proportional to 7,292.64, 10,092.72 and 7,117.92 is: 9,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,292.64 : 10,092.72 = 7,117.92 : x
  2. Step 2: Convert to fraction form
    7,292.64/10,092.72 = 7,117.92/x
  3. Step 3: Cross multiply
    7,292.64x = 10,092.72 × 7,117.92
  4. Step 4: Simplify right side
    7,292.64x = 71,839,173.54
  5. Step 5: Solve for x
    x = 71,839,173.54/7,292.64
  6. Step 6: Final answer
    x = 9,850.91

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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.