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Finding the Fourth Proportional to 7,168.26, 9,888.67 and 6,222.79

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Solution

The fourth proportional to 7,168.26, 9,888.67 and 6,222.79 is: 8,584.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.26 : 9,888.67 = 6,222.79 : x
  2. Step 2: Convert to fraction form
    7,168.26/9,888.67 = 6,222.79/x
  3. Step 3: Cross multiply
    7,168.26x = 9,888.67 × 6,222.79
  4. Step 4: Simplify right side
    7,168.26x = 61,535,116.79
  5. Step 5: Solve for x
    x = 61,535,116.79/7,168.26
  6. Step 6: Final answer
    x = 8,584.39

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Half scale
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Double scale
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Similar ratio
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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.