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Finding the Fourth Proportional to 3,868.99, 5,803.48 and 1,403.81

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Solution

The fourth proportional to 3,868.99, 5,803.48 and 1,403.81 is: 2,105.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.99 : 5,803.48 = 1,403.81 : x
  2. Step 2: Convert to fraction form
    3,868.99/5,803.48 = 1,403.81/x
  3. Step 3: Cross multiply
    3,868.99x = 5,803.48 × 1,403.81
  4. Step 4: Simplify right side
    3,868.99x = 8,146,983.26
  5. Step 5: Solve for x
    x = 8,146,983.26/3,868.99
  6. Step 6: Final answer
    x = 2,105.71

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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.