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Finding the Fourth Proportional to 8,798.36, 13,197.54 and 8,215.16

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Solution

The fourth proportional to 8,798.36, 13,197.54 and 8,215.16 is: 12,322.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.36 : 13,197.54 = 8,215.16 : x
  2. Step 2: Convert to fraction form
    8,798.36/13,197.54 = 8,215.16/x
  3. Step 3: Cross multiply
    8,798.36x = 13,197.54 × 8,215.16
  4. Step 4: Simplify right side
    8,798.36x = 108,419,902.71
  5. Step 5: Solve for x
    x = 108,419,902.71/8,798.36
  6. Step 6: Final answer
    x = 12,322.74

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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.