Home / 1,971.25-2,719.96-1,214.79

Finding the Fourth Proportional to 1,971.25, 2,719.96 and 1,214.79

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Solution

The fourth proportional to 1,971.25, 2,719.96 and 1,214.79 is: 1,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.25 : 2,719.96 = 1,214.79 : x
  2. Step 2: Convert to fraction form
    1,971.25/2,719.96 = 1,214.79/x
  3. Step 3: Cross multiply
    1,971.25x = 2,719.96 × 1,214.79
  4. Step 4: Simplify right side
    1,971.25x = 3,304,180.21
  5. Step 5: Solve for x
    x = 3,304,180.21/1,971.25
  6. Step 6: Final answer
    x = 1,676.19

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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.