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Finding the Fourth Proportional to 8,697.90, 11,981.22 and 8,060.01

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Solution

The fourth proportional to 8,697.90, 11,981.22 and 8,060.01 is: 11,102.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.90 : 11,981.22 = 8,060.01 : x
  2. Step 2: Convert to fraction form
    8,697.90/11,981.22 = 8,060.01/x
  3. Step 3: Cross multiply
    8,697.90x = 11,981.22 × 8,060.01
  4. Step 4: Simplify right side
    8,697.90x = 96,568,753.01
  5. Step 5: Solve for x
    x = 96,568,753.01/8,697.90
  6. Step 6: Final answer
    x = 11,102.54

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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.