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Finding the Fourth Proportional to 6,872.67, 10,309.05 and 2,490.30

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Solution

The fourth proportional to 6,872.67, 10,309.05 and 2,490.30 is: 3,735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.67 : 10,309.05 = 2,490.30 : x
  2. Step 2: Convert to fraction form
    6,872.67/10,309.05 = 2,490.30/x
  3. Step 3: Cross multiply
    6,872.67x = 10,309.05 × 2,490.30
  4. Step 4: Simplify right side
    6,872.67x = 25,672,627.22
  5. Step 5: Solve for x
    x = 25,672,627.22/6,872.67
  6. Step 6: Final answer
    x = 3,735.47

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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.