Home / 2,836.16-3,909.24-1,997.80

Finding the Fourth Proportional to 2,836.16, 3,909.24 and 1,997.80

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Solution

The fourth proportional to 2,836.16, 3,909.24 and 1,997.80 is: 2,753.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.16 : 3,909.24 = 1,997.80 : x
  2. Step 2: Convert to fraction form
    2,836.16/3,909.24 = 1,997.80/x
  3. Step 3: Cross multiply
    2,836.16x = 3,909.24 × 1,997.80
  4. Step 4: Simplify right side
    2,836.16x = 7,809,879.67
  5. Step 5: Solve for x
    x = 7,809,879.67/2,836.16
  6. Step 6: Final answer
    x = 2,753.68

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1.5x scale

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.