Home / 1,910.60-2,863.74-1,215.56

Finding the Fourth Proportional to 1,910.60, 2,863.74 and 1,215.56

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Solution

The fourth proportional to 1,910.60, 2,863.74 and 1,215.56 is: 1,821.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.60 : 2,863.74 = 1,215.56 : x
  2. Step 2: Convert to fraction form
    1,910.60/2,863.74 = 1,215.56/x
  3. Step 3: Cross multiply
    1,910.60x = 2,863.74 × 1,215.56
  4. Step 4: Simplify right side
    1,910.60x = 3,481,047.79
  5. Step 5: Solve for x
    x = 3,481,047.79/1,910.60
  6. Step 6: Final answer
    x = 1,821.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.