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Finding the Fourth Proportional to 3,895.79, 5,375.97 and 2,403.81

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Solution

The fourth proportional to 3,895.79, 5,375.97 and 2,403.81 is: 3,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.79 : 5,375.97 = 2,403.81 : x
  2. Step 2: Convert to fraction form
    3,895.79/5,375.97 = 2,403.81/x
  3. Step 3: Cross multiply
    3,895.79x = 5,375.97 × 2,403.81
  4. Step 4: Simplify right side
    3,895.79x = 12,922,810.45
  5. Step 5: Solve for x
    x = 12,922,810.45/3,895.79
  6. Step 6: Final answer
    x = 3,317.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.