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Finding the Fourth Proportional to 8,385.54, 12,579.83 and 6,839.25

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Solution

The fourth proportional to 8,385.54, 12,579.83 and 6,839.25 is: 10,260.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.54 : 12,579.83 = 6,839.25 : x
  2. Step 2: Convert to fraction form
    8,385.54/12,579.83 = 6,839.25/x
  3. Step 3: Cross multiply
    8,385.54x = 12,579.83 × 6,839.25
  4. Step 4: Simplify right side
    8,385.54x = 86,036,602.33
  5. Step 5: Solve for x
    x = 86,036,602.33/8,385.54
  6. Step 6: Final answer
    x = 10,260.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.