Home / 1,920.11-2,648.92-1,174.10

Finding the Fourth Proportional to 1,920.11, 2,648.92 and 1,174.10

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Solution

The fourth proportional to 1,920.11, 2,648.92 and 1,174.10 is: 1,619.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.11 : 2,648.92 = 1,174.10 : x
  2. Step 2: Convert to fraction form
    1,920.11/2,648.92 = 1,174.10/x
  3. Step 3: Cross multiply
    1,920.11x = 2,648.92 × 1,174.10
  4. Step 4: Simplify right side
    1,920.11x = 3,110,091.10
  5. Step 5: Solve for x
    x = 3,110,091.10/1,920.11
  6. Step 6: Final answer
    x = 1,619.75

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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.