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Finding the Fourth Proportional to 3,780.62, 5,670.74 and 1,586.74

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Solution

The fourth proportional to 3,780.62, 5,670.74 and 1,586.74 is: 2,380.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.62 : 5,670.74 = 1,586.74 : x
  2. Step 2: Convert to fraction form
    3,780.62/5,670.74 = 1,586.74/x
  3. Step 3: Cross multiply
    3,780.62x = 5,670.74 × 1,586.74
  4. Step 4: Simplify right side
    3,780.62x = 8,997,989.99
  5. Step 5: Solve for x
    x = 8,997,989.99/3,780.62
  6. Step 6: Final answer
    x = 2,380.03

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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.