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Finding the Fourth Proportional to 8,920.62, 13,322.37 and 7,168.29

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Solution

The fourth proportional to 8,920.62, 13,322.37 and 7,168.29 is: 10,705.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.62 : 13,322.37 = 7,168.29 : x
  2. Step 2: Convert to fraction form
    8,920.62/13,322.37 = 7,168.29/x
  3. Step 3: Cross multiply
    8,920.62x = 13,322.37 × 7,168.29
  4. Step 4: Simplify right side
    8,920.62x = 95,498,611.65
  5. Step 5: Solve for x
    x = 95,498,611.65/8,920.62
  6. Step 6: Final answer
    x = 10,705.38

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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.