Home / 2,873.49-3,965.40-1,679.28

Finding the Fourth Proportional to 2,873.49, 3,965.40 and 1,679.28

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Solution

The fourth proportional to 2,873.49, 3,965.40 and 1,679.28 is: 2,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,873.49 : 3,965.40 = 1,679.28 : x
  2. Step 2: Convert to fraction form
    2,873.49/3,965.40 = 1,679.28/x
  3. Step 3: Cross multiply
    2,873.49x = 3,965.40 × 1,679.28
  4. Step 4: Simplify right side
    2,873.49x = 6,659,016.91
  5. Step 5: Solve for x
    x = 6,659,016.91/2,873.49
  6. Step 6: Final answer
    x = 2,317.40

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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.