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Finding the Fourth Proportional to 8,619, 11,899.80 and 6,727.32

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Solution

The fourth proportional to 8,619, 11,899.80 and 6,727.32 is: 9,288.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619 : 11,899.80 = 6,727.32 : x
  2. Step 2: Convert to fraction form
    8,619/11,899.80 = 6,727.32/x
  3. Step 3: Cross multiply
    8,619x = 11,899.80 × 6,727.32
  4. Step 4: Simplify right side
    8,619x = 80,053,762.54
  5. Step 5: Solve for x
    x = 80,053,762.54/8,619
  6. Step 6: Final answer
    x = 9,288.06

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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.