Home / 2,959.86-4,084.77-1,781.31

Finding the Fourth Proportional to 2,959.86, 4,084.77 and 1,781.31

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Solution

The fourth proportional to 2,959.86, 4,084.77 and 1,781.31 is: 2,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.86 : 4,084.77 = 1,781.31 : x
  2. Step 2: Convert to fraction form
    2,959.86/4,084.77 = 1,781.31/x
  3. Step 3: Cross multiply
    2,959.86x = 4,084.77 × 1,781.31
  4. Step 4: Simplify right side
    2,959.86x = 7,276,241.65
  5. Step 5: Solve for x
    x = 7,276,241.65/2,959.86
  6. Step 6: Final answer
    x = 2,458.31

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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.