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Finding the Fourth Proportional to 8,855, 12,219.83 and 5,272.42

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Solution

The fourth proportional to 8,855, 12,219.83 and 5,272.42 is: 7,275.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855 : 12,219.83 = 5,272.42 : x
  2. Step 2: Convert to fraction form
    8,855/12,219.83 = 5,272.42/x
  3. Step 3: Cross multiply
    8,855x = 12,219.83 × 5,272.42
  4. Step 4: Simplify right side
    8,855x = 64,428,014.99
  5. Step 5: Solve for x
    x = 64,428,014.99/8,855
  6. Step 6: Final answer
    x = 7,275.89

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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.