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Finding the Fourth Proportional to 8,879.14, 13,324.02 and 7,971.49

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Solution

The fourth proportional to 8,879.14, 13,324.02 and 7,971.49 is: 11,962.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.14 : 13,324.02 = 7,971.49 : x
  2. Step 2: Convert to fraction form
    8,879.14/13,324.02 = 7,971.49/x
  3. Step 3: Cross multiply
    8,879.14x = 13,324.02 × 7,971.49
  4. Step 4: Simplify right side
    8,879.14x = 106,212,292.19
  5. Step 5: Solve for x
    x = 106,212,292.19/8,879.14
  6. Step 6: Final answer
    x = 11,962.00

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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.