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Finding the Fourth Proportional to 8,961.66, 12,366.99 and 4,983.12

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Solution

The fourth proportional to 8,961.66, 12,366.99 and 4,983.12 is: 6,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.66 : 12,366.99 = 4,983.12 : x
  2. Step 2: Convert to fraction form
    8,961.66/12,366.99 = 4,983.12/x
  3. Step 3: Cross multiply
    8,961.66x = 12,366.99 × 4,983.12
  4. Step 4: Simplify right side
    8,961.66x = 61,626,195.21
  5. Step 5: Solve for x
    x = 61,626,195.21/8,961.66
  6. Step 6: Final answer
    x = 6,876.65

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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.