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Finding the Fourth Proportional to 3,400.72, 5,101.10 and 935.80

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Solution

The fourth proportional to 3,400.72, 5,101.10 and 935.80 is: 1,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.72 : 5,101.10 = 935.80 : x
  2. Step 2: Convert to fraction form
    3,400.72/5,101.10 = 935.80/x
  3. Step 3: Cross multiply
    3,400.72x = 5,101.10 × 935.80
  4. Step 4: Simplify right side
    3,400.72x = 4,773,579.20
  5. Step 5: Solve for x
    x = 4,773,579.20/3,400.72
  6. Step 6: Final answer
    x = 1,403.70

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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.