Home / 2,207.31-3,310.92-890.70

Finding the Fourth Proportional to 2,207.31, 3,310.92 and 890.70

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Solution

The fourth proportional to 2,207.31, 3,310.92 and 890.70 is: 1,336.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.31 : 3,310.92 = 890.70 : x
  2. Step 2: Convert to fraction form
    2,207.31/3,310.92 = 890.70/x
  3. Step 3: Cross multiply
    2,207.31x = 3,310.92 × 890.70
  4. Step 4: Simplify right side
    2,207.31x = 2,949,036.44
  5. Step 5: Solve for x
    x = 2,949,036.44/2,207.31
  6. Step 6: Final answer
    x = 1,336.03

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1.5x scale

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.