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Finding the Fourth Proportional to 8,053.12, 11,187.71 and 7,981.03

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Solution

The fourth proportional to 8,053.12, 11,187.71 and 7,981.03 is: 11,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,053.12 : 11,187.71 = 7,981.03 : x
  2. Step 2: Convert to fraction form
    8,053.12/11,187.71 = 7,981.03/x
  3. Step 3: Cross multiply
    8,053.12x = 11,187.71 × 7,981.03
  4. Step 4: Simplify right side
    8,053.12x = 89,289,449.14
  5. Step 5: Solve for x
    x = 89,289,449.14/8,053.12
  6. Step 6: Final answer
    x = 11,087.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.