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Finding the Fourth Proportional to 6,381.17, 8,805.79 and 3,730.31

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Solution

The fourth proportional to 6,381.17, 8,805.79 and 3,730.31 is: 5,147.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.17 : 8,805.79 = 3,730.31 : x
  2. Step 2: Convert to fraction form
    6,381.17/8,805.79 = 3,730.31/x
  3. Step 3: Cross multiply
    6,381.17x = 8,805.79 × 3,730.31
  4. Step 4: Simplify right side
    6,381.17x = 32,848,353.17
  5. Step 5: Solve for x
    x = 32,848,353.17/6,381.17
  6. Step 6: Final answer
    x = 5,147.70

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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.