Home / 1,619.30-2,417.97-1,286.51

Finding the Fourth Proportional to 1,619.30, 2,417.97 and 1,286.51

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Solution

The fourth proportional to 1,619.30, 2,417.97 and 1,286.51 is: 1,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.30 : 2,417.97 = 1,286.51 : x
  2. Step 2: Convert to fraction form
    1,619.30/2,417.97 = 1,286.51/x
  3. Step 3: Cross multiply
    1,619.30x = 2,417.97 × 1,286.51
  4. Step 4: Simplify right side
    1,619.30x = 3,110,742.58
  5. Step 5: Solve for x
    x = 3,110,742.58/1,619.30
  6. Step 6: Final answer
    x = 1,921.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.