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Finding the Fourth Proportional to 8,643.66, 11,928.19 and 4,866.83

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Solution

The fourth proportional to 8,643.66, 11,928.19 and 4,866.83 is: 6,716.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.66 : 11,928.19 = 4,866.83 : x
  2. Step 2: Convert to fraction form
    8,643.66/11,928.19 = 4,866.83/x
  3. Step 3: Cross multiply
    8,643.66x = 11,928.19 × 4,866.83
  4. Step 4: Simplify right side
    8,643.66x = 58,052,508.39
  5. Step 5: Solve for x
    x = 58,052,508.39/8,643.66
  6. Step 6: Final answer
    x = 6,716.19

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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.