Home / 2,116.12-2,920.39-1,171.95

Finding the Fourth Proportional to 2,116.12, 2,920.39 and 1,171.95

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Solution

The fourth proportional to 2,116.12, 2,920.39 and 1,171.95 is: 1,617.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.12 : 2,920.39 = 1,171.95 : x
  2. Step 2: Convert to fraction form
    2,116.12/2,920.39 = 1,171.95/x
  3. Step 3: Cross multiply
    2,116.12x = 2,920.39 × 1,171.95
  4. Step 4: Simplify right side
    2,116.12x = 3,422,551.06
  5. Step 5: Solve for x
    x = 3,422,551.06/2,116.12
  6. Step 6: Final answer
    x = 1,617.37

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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.