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Finding the Fourth Proportional to 8,729.36, 13,094.04 and 7,187.12

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Solution

The fourth proportional to 8,729.36, 13,094.04 and 7,187.12 is: 10,780.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.36 : 13,094.04 = 7,187.12 : x
  2. Step 2: Convert to fraction form
    8,729.36/13,094.04 = 7,187.12/x
  3. Step 3: Cross multiply
    8,729.36x = 13,094.04 × 7,187.12
  4. Step 4: Simplify right side
    8,729.36x = 94,108,436.76
  5. Step 5: Solve for x
    x = 94,108,436.76/8,729.36
  6. Step 6: Final answer
    x = 10,780.68

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