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Finding the Fourth Proportional to 7,908.13, 10,904.22 and 5,391.71

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Solution

The fourth proportional to 7,908.13, 10,904.22 and 5,391.71 is: 7,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.13 : 10,904.22 = 5,391.71 : x
  2. Step 2: Convert to fraction form
    7,908.13/10,904.22 = 5,391.71/x
  3. Step 3: Cross multiply
    7,908.13x = 10,904.22 × 5,391.71
  4. Step 4: Simplify right side
    7,908.13x = 58,792,439.72
  5. Step 5: Solve for x
    x = 58,792,439.72/7,908.13
  6. Step 6: Final answer
    x = 7,434.43

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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.