Home / 2,781.30-3,838.47-1,662.08

Finding the Fourth Proportional to 2,781.30, 3,838.47 and 1,662.08

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Solution

The fourth proportional to 2,781.30, 3,838.47 and 1,662.08 is: 2,293.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.30 : 3,838.47 = 1,662.08 : x
  2. Step 2: Convert to fraction form
    2,781.30/3,838.47 = 1,662.08/x
  3. Step 3: Cross multiply
    2,781.30x = 3,838.47 × 1,662.08
  4. Step 4: Simplify right side
    2,781.30x = 6,379,844.22
  5. Step 5: Solve for x
    x = 6,379,844.22/2,781.30
  6. Step 6: Final answer
    x = 2,293.84

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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.