Home / 2,538.34-3,790.87-2,127.80

Finding the Fourth Proportional to 2,538.34, 3,790.87 and 2,127.80

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Solution

The fourth proportional to 2,538.34, 3,790.87 and 2,127.80 is: 3,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.34 : 3,790.87 = 2,127.80 : x
  2. Step 2: Convert to fraction form
    2,538.34/3,790.87 = 2,127.80/x
  3. Step 3: Cross multiply
    2,538.34x = 3,790.87 × 2,127.80
  4. Step 4: Simplify right side
    2,538.34x = 8,066,217.34
  5. Step 5: Solve for x
    x = 8,066,217.34/2,538.34
  6. Step 6: Final answer
    x = 3,177.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.