Home / 1,917.06-2,645.30-1,171.20

Finding the Fourth Proportional to 1,917.06, 2,645.30 and 1,171.20

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Solution

The fourth proportional to 1,917.06, 2,645.30 and 1,171.20 is: 1,616.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.06 : 2,645.30 = 1,171.20 : x
  2. Step 2: Convert to fraction form
    1,917.06/2,645.30 = 1,171.20/x
  3. Step 3: Cross multiply
    1,917.06x = 2,645.30 × 1,171.20
  4. Step 4: Simplify right side
    1,917.06x = 3,098,175.36
  5. Step 5: Solve for x
    x = 3,098,175.36/1,917.06
  6. Step 6: Final answer
    x = 1,616.11

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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.