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Finding the Fourth Proportional to 6,881.32, 9,496.81 and 3,897.68

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Solution

The fourth proportional to 6,881.32, 9,496.81 and 3,897.68 is: 5,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,881.32 : 9,496.81 = 3,897.68 : x
  2. Step 2: Convert to fraction form
    6,881.32/9,496.81 = 3,897.68/x
  3. Step 3: Cross multiply
    6,881.32x = 9,496.81 × 3,897.68
  4. Step 4: Simplify right side
    6,881.32x = 37,015,530.65
  5. Step 5: Solve for x
    x = 37,015,530.65/6,881.32
  6. Step 6: Final answer
    x = 5,379.13

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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.