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Finding the Fourth Proportional to 8,608.05, 11,878.13 and 4,830.71

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Solution

The fourth proportional to 8,608.05, 11,878.13 and 4,830.71 is: 6,665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.05 : 11,878.13 = 4,830.71 : x
  2. Step 2: Convert to fraction form
    8,608.05/11,878.13 = 4,830.71/x
  3. Step 3: Cross multiply
    8,608.05x = 11,878.13 × 4,830.71
  4. Step 4: Simplify right side
    8,608.05x = 57,379,754.06
  5. Step 5: Solve for x
    x = 57,379,754.06/8,608.05
  6. Step 6: Final answer
    x = 6,665.82

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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.