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Finding the Fourth Proportional to 11,453.80, 15,805.46 and 6,349

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Solution

The fourth proportional to 11,453.80, 15,805.46 and 6,349 is: 8,761.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,453.80 : 15,805.46 = 6,349 : x
  2. Step 2: Convert to fraction form
    11,453.80/15,805.46 = 6,349/x
  3. Step 3: Cross multiply
    11,453.80x = 15,805.46 × 6,349
  4. Step 4: Simplify right side
    11,453.80x = 100,348,865.54
  5. Step 5: Solve for x
    x = 100,348,865.54/11,453.80
  6. Step 6: Final answer
    x = 8,761.19

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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.