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Finding the Fourth Proportional to 3,832.76, 5,752.64 and 1,985.05

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Solution

The fourth proportional to 3,832.76, 5,752.64 and 1,985.05 is: 2,979.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,832.76 : 5,752.64 = 1,985.05 : x
  2. Step 2: Convert to fraction form
    3,832.76/5,752.64 = 1,985.05/x
  3. Step 3: Cross multiply
    3,832.76x = 5,752.64 × 1,985.05
  4. Step 4: Simplify right side
    3,832.76x = 11,419,253.73
  5. Step 5: Solve for x
    x = 11,419,253.73/3,832.76
  6. Step 6: Final answer
    x = 2,979.38

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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.