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Finding the Fourth Proportional to 2,620.86, 3,618.30 and 1,737.87

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Solution

The fourth proportional to 2,620.86, 3,618.30 and 1,737.87 is: 2,399.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.86 : 3,618.30 = 1,737.87 : x
  2. Step 2: Convert to fraction form
    2,620.86/3,618.30 = 1,737.87/x
  3. Step 3: Cross multiply
    2,620.86x = 3,618.30 × 1,737.87
  4. Step 4: Simplify right side
    2,620.86x = 6,288,135.02
  5. Step 5: Solve for x
    x = 6,288,135.02/2,620.86
  6. Step 6: Final answer
    x = 2,399.26

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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.