Home / 1,894.15-2,612.94-1,231.36

Finding the Fourth Proportional to 1,894.15, 2,612.94 and 1,231.36

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Solution

The fourth proportional to 1,894.15, 2,612.94 and 1,231.36 is: 1,698.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.15 : 2,612.94 = 1,231.36 : x
  2. Step 2: Convert to fraction form
    1,894.15/2,612.94 = 1,231.36/x
  3. Step 3: Cross multiply
    1,894.15x = 2,612.94 × 1,231.36
  4. Step 4: Simplify right side
    1,894.15x = 3,217,469.80
  5. Step 5: Solve for x
    x = 3,217,469.80/1,894.15
  6. Step 6: Final answer
    x = 1,698.64

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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.