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Finding the Fourth Proportional to 7,910.28, 10,917 and 4,553.22

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Solution

The fourth proportional to 7,910.28, 10,917 and 4,553.22 is: 6,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.28 : 10,917 = 4,553.22 : x
  2. Step 2: Convert to fraction form
    7,910.28/10,917 = 4,553.22/x
  3. Step 3: Cross multiply
    7,910.28x = 10,917 × 4,553.22
  4. Step 4: Simplify right side
    7,910.28x = 49,707,502.74
  5. Step 5: Solve for x
    x = 49,707,502.74/7,910.28
  6. Step 6: Final answer
    x = 6,283.91

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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.