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Finding the Fourth Proportional to 7,908.36, 10,904.64 and 5,391.93

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Solution

The fourth proportional to 7,908.36, 10,904.64 and 5,391.93 is: 7,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.36 : 10,904.64 = 5,391.93 : x
  2. Step 2: Convert to fraction form
    7,908.36/10,904.64 = 5,391.93/x
  3. Step 3: Cross multiply
    7,908.36x = 10,904.64 × 5,391.93
  4. Step 4: Simplify right side
    7,908.36x = 58,797,055.56
  5. Step 5: Solve for x
    x = 58,797,055.56/7,908.36
  6. Step 6: Final answer
    x = 7,434.80

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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.