Home / 2,155.29-2,974.44-1,448.31

Finding the Fourth Proportional to 2,155.29, 2,974.44 and 1,448.31

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Solution

The fourth proportional to 2,155.29, 2,974.44 and 1,448.31 is: 1,998.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.29 : 2,974.44 = 1,448.31 : x
  2. Step 2: Convert to fraction form
    2,155.29/2,974.44 = 1,448.31/x
  3. Step 3: Cross multiply
    2,155.29x = 2,974.44 × 1,448.31
  4. Step 4: Simplify right side
    2,155.29x = 4,307,911.20
  5. Step 5: Solve for x
    x = 4,307,911.20/2,155.29
  6. Step 6: Final answer
    x = 1,998.76

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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.