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Finding the Fourth Proportional to 3,436.77, 5,155.17 and 1,563.87

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Solution

The fourth proportional to 3,436.77, 5,155.17 and 1,563.87 is: 2,345.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.77 : 5,155.17 = 1,563.87 : x
  2. Step 2: Convert to fraction form
    3,436.77/5,155.17 = 1,563.87/x
  3. Step 3: Cross multiply
    3,436.77x = 5,155.17 × 1,563.87
  4. Step 4: Simplify right side
    3,436.77x = 8,062,015.71
  5. Step 5: Solve for x
    x = 8,062,015.71/3,436.77
  6. Step 6: Final answer
    x = 2,345.81

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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.