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Finding the Fourth Proportional to 2,796.87, 3,859.37 and 1,677.86

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Solution

The fourth proportional to 2,796.87, 3,859.37 and 1,677.86 is: 2,315.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.87 : 3,859.37 = 1,677.86 : x
  2. Step 2: Convert to fraction form
    2,796.87/3,859.37 = 1,677.86/x
  3. Step 3: Cross multiply
    2,796.87x = 3,859.37 × 1,677.86
  4. Step 4: Simplify right side
    2,796.87x = 6,475,463.25
  5. Step 5: Solve for x
    x = 6,475,463.25/2,796.87
  6. Step 6: Final answer
    x = 2,315.25

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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.