Home / 2,128.05-3,197.07-1,252.77

Finding the Fourth Proportional to 2,128.05, 3,197.07 and 1,252.77

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Solution

The fourth proportional to 2,128.05, 3,197.07 and 1,252.77 is: 1,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.05 : 3,197.07 = 1,252.77 : x
  2. Step 2: Convert to fraction form
    2,128.05/3,197.07 = 1,252.77/x
  3. Step 3: Cross multiply
    2,128.05x = 3,197.07 × 1,252.77
  4. Step 4: Simplify right side
    2,128.05x = 4,005,193.38
  5. Step 5: Solve for x
    x = 4,005,193.38/2,128.05
  6. Step 6: Final answer
    x = 1,882.10

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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.