Home / 2,155.31-2,989.44-2,067.83

Finding the Fourth Proportional to 2,155.31, 2,989.44 and 2,067.83

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Solution

The fourth proportional to 2,155.31, 2,989.44 and 2,067.83 is: 2,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.31 : 2,989.44 = 2,067.83 : x
  2. Step 2: Convert to fraction form
    2,155.31/2,989.44 = 2,067.83/x
  3. Step 3: Cross multiply
    2,155.31x = 2,989.44 × 2,067.83
  4. Step 4: Simplify right side
    2,155.31x = 6,181,638.77
  5. Step 5: Solve for x
    x = 6,181,638.77/2,155.31
  6. Step 6: Final answer
    x = 2,868.10

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.