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Finding the Fourth Proportional to 3,970.62, 5,929.20 and 3,241.62

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Solution

The fourth proportional to 3,970.62, 5,929.20 and 3,241.62 is: 4,840.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.62 : 5,929.20 = 3,241.62 : x
  2. Step 2: Convert to fraction form
    3,970.62/5,929.20 = 3,241.62/x
  3. Step 3: Cross multiply
    3,970.62x = 5,929.20 × 3,241.62
  4. Step 4: Simplify right side
    3,970.62x = 19,220,213.30
  5. Step 5: Solve for x
    x = 19,220,213.30/3,970.62
  6. Step 6: Final answer
    x = 4,840.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.