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Finding the Fourth Proportional to 7,989.41, 12,027.26 and 7,185.69

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Solution

The fourth proportional to 7,989.41, 12,027.26 and 7,185.69 is: 10,817.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.41 : 12,027.26 = 7,185.69 : x
  2. Step 2: Convert to fraction form
    7,989.41/12,027.26 = 7,185.69/x
  3. Step 3: Cross multiply
    7,989.41x = 12,027.26 × 7,185.69
  4. Step 4: Simplify right side
    7,989.41x = 86,424,161.91
  5. Step 5: Solve for x
    x = 86,424,161.91/7,989.41
  6. Step 6: Final answer
    x = 10,817.34

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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 (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.