Home / 2,155.13-2,971.73-1,455.29

Finding the Fourth Proportional to 2,155.13, 2,971.73 and 1,455.29

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Solution

The fourth proportional to 2,155.13, 2,971.73 and 1,455.29 is: 2,006.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.13 : 2,971.73 = 1,455.29 : x
  2. Step 2: Convert to fraction form
    2,155.13/2,971.73 = 1,455.29/x
  3. Step 3: Cross multiply
    2,155.13x = 2,971.73 × 1,455.29
  4. Step 4: Simplify right side
    2,155.13x = 4,324,721.68
  5. Step 5: Solve for x
    x = 4,324,721.68/2,155.13
  6. Step 6: Final answer
    x = 2,006.71

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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.