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Finding the Fourth Proportional to 8,772.68, 12,107.15 and 4,794.40

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Solution

The fourth proportional to 8,772.68, 12,107.15 and 4,794.40 is: 6,616.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.68 : 12,107.15 = 4,794.40 : x
  2. Step 2: Convert to fraction form
    8,772.68/12,107.15 = 4,794.40/x
  3. Step 3: Cross multiply
    8,772.68x = 12,107.15 × 4,794.40
  4. Step 4: Simplify right side
    8,772.68x = 58,046,519.96
  5. Step 5: Solve for x
    x = 58,046,519.96/8,772.68
  6. Step 6: Final answer
    x = 6,616.74

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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.