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Finding the Fourth Proportional to 3,771.11, 5,656.59 and 997.81

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Solution

The fourth proportional to 3,771.11, 5,656.59 and 997.81 is: 1,496.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.11 : 5,656.59 = 997.81 : x
  2. Step 2: Convert to fraction form
    3,771.11/5,656.59 = 997.81/x
  3. Step 3: Cross multiply
    3,771.11x = 5,656.59 × 997.81
  4. Step 4: Simplify right side
    3,771.11x = 5,644,187.93
  5. Step 5: Solve for x
    x = 5,644,187.93/3,771.11
  6. Step 6: Final answer
    x = 1,496.69

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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.