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Finding the Fourth Proportional to 2,739.71, 3,781.11 and 1,620.93

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Solution

The fourth proportional to 2,739.71, 3,781.11 and 1,620.93 is: 2,237.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.71 : 3,781.11 = 1,620.93 : x
  2. Step 2: Convert to fraction form
    2,739.71/3,781.11 = 1,620.93/x
  3. Step 3: Cross multiply
    2,739.71x = 3,781.11 × 1,620.93
  4. Step 4: Simplify right side
    2,739.71x = 6,128,914.63
  5. Step 5: Solve for x
    x = 6,128,914.63/2,739.71
  6. Step 6: Final answer
    x = 2,237.07

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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.