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Finding the Fourth Proportional to 6,809.78, 10,215.54 and 2,427.68

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Solution

The fourth proportional to 6,809.78, 10,215.54 and 2,427.68 is: 3,641.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,809.78 : 10,215.54 = 2,427.68 : x
  2. Step 2: Convert to fraction form
    6,809.78/10,215.54 = 2,427.68/x
  3. Step 3: Cross multiply
    6,809.78x = 10,215.54 × 2,427.68
  4. Step 4: Simplify right side
    6,809.78x = 24,800,062.15
  5. Step 5: Solve for x
    x = 24,800,062.15/6,809.78
  6. Step 6: Final answer
    x = 3,641.83

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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.