Home / 1,231.35-1,698.18-968.91

Finding the Fourth Proportional to 1,231.35, 1,698.18 and 968.91

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Solution

The fourth proportional to 1,231.35, 1,698.18 and 968.91 is: 1,336.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.35 : 1,698.18 = 968.91 : x
  2. Step 2: Convert to fraction form
    1,231.35/1,698.18 = 968.91/x
  3. Step 3: Cross multiply
    1,231.35x = 1,698.18 × 968.91
  4. Step 4: Simplify right side
    1,231.35x = 1,645,383.58
  5. Step 5: Solve for x
    x = 1,645,383.58/1,231.35
  6. Step 6: Final answer
    x = 1,336.24

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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.