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Finding the Fourth Proportional to 8,799.99, 13,199.98 and 8,216.79

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Solution

The fourth proportional to 8,799.99, 13,199.98 and 8,216.79 is: 12,325.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.99 : 13,199.98 = 8,216.79 : x
  2. Step 2: Convert to fraction form
    8,799.99/13,199.98 = 8,216.79/x
  3. Step 3: Cross multiply
    8,799.99x = 13,199.98 × 8,216.79
  4. Step 4: Simplify right side
    8,799.99x = 108,461,463.66
  5. Step 5: Solve for x
    x = 108,461,463.66/8,799.99
  6. Step 6: Final answer
    x = 12,325.18

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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.