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Finding the Fourth Proportional to 7,291.27, 10,876.29 and 7,170.87

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Solution

The fourth proportional to 7,291.27, 10,876.29 and 7,170.87 is: 10,696.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.27 : 10,876.29 = 7,170.87 : x
  2. Step 2: Convert to fraction form
    7,291.27/10,876.29 = 7,170.87/x
  3. Step 3: Cross multiply
    7,291.27x = 10,876.29 × 7,170.87
  4. Step 4: Simplify right side
    7,291.27x = 77,992,409.18
  5. Step 5: Solve for x
    x = 77,992,409.18/7,291.27
  6. Step 6: Final answer
    x = 10,696.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.