Home / 2,781.48-4,165.80-1,996.60

Finding the Fourth Proportional to 2,781.48, 4,165.80 and 1,996.60

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Solution

The fourth proportional to 2,781.48, 4,165.80 and 1,996.60 is: 2,990.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.48 : 4,165.80 = 1,996.60 : x
  2. Step 2: Convert to fraction form
    2,781.48/4,165.80 = 1,996.60/x
  3. Step 3: Cross multiply
    2,781.48x = 4,165.80 × 1,996.60
  4. Step 4: Simplify right side
    2,781.48x = 8,317,436.28
  5. Step 5: Solve for x
    x = 8,317,436.28/2,781.48
  6. Step 6: Final answer
    x = 2,990.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.