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Finding the Fourth Proportional to 8,482.78, 11,715.38 and 6,616.54

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Solution

The fourth proportional to 8,482.78, 11,715.38 and 6,616.54 is: 9,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.78 : 11,715.38 = 6,616.54 : x
  2. Step 2: Convert to fraction form
    8,482.78/11,715.38 = 6,616.54/x
  3. Step 3: Cross multiply
    8,482.78x = 11,715.38 × 6,616.54
  4. Step 4: Simplify right side
    8,482.78x = 77,515,280.39
  5. Step 5: Solve for x
    x = 77,515,280.39/8,482.78
  6. Step 6: Final answer
    x = 9,137.96

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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.