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Finding the Fourth Proportional to 8,643.84, 11,928.24 and 6,295.92

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Solution

The fourth proportional to 8,643.84, 11,928.24 and 6,295.92 is: 8,688.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.84 : 11,928.24 = 6,295.92 : x
  2. Step 2: Convert to fraction form
    8,643.84/11,928.24 = 6,295.92/x
  3. Step 3: Cross multiply
    8,643.84x = 11,928.24 × 6,295.92
  4. Step 4: Simplify right side
    8,643.84x = 75,099,244.78
  5. Step 5: Solve for x
    x = 75,099,244.78/8,643.84
  6. Step 6: Final answer
    x = 8,688.18

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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.