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Finding the Fourth Proportional to 8,607.75, 11,878.02 and 4,830.39

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Solution

The fourth proportional to 8,607.75, 11,878.02 and 4,830.39 is: 6,665.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.75 : 11,878.02 = 4,830.39 : x
  2. Step 2: Convert to fraction form
    8,607.75/11,878.02 = 4,830.39/x
  3. Step 3: Cross multiply
    8,607.75x = 11,878.02 × 4,830.39
  4. Step 4: Simplify right side
    8,607.75x = 57,375,469.03
  5. Step 5: Solve for x
    x = 57,375,469.03/8,607.75
  6. Step 6: Final answer
    x = 6,665.56

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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.