Home / 2,768.29-3,817.80-2,177.80

Finding the Fourth Proportional to 2,768.29, 3,817.80 and 2,177.80

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Solution

The fourth proportional to 2,768.29, 3,817.80 and 2,177.80 is: 3,003.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.29 : 3,817.80 = 2,177.80 : x
  2. Step 2: Convert to fraction form
    2,768.29/3,817.80 = 2,177.80/x
  3. Step 3: Cross multiply
    2,768.29x = 3,817.80 × 2,177.80
  4. Step 4: Simplify right side
    2,768.29x = 8,314,395.30
  5. Step 5: Solve for x
    x = 8,314,395.30/2,768.29
  6. Step 6: Final answer
    x = 3,003.44

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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.