Home / 2,240.90-3,357.30-1,981.70

Finding the Fourth Proportional to 2,240.90, 3,357.30 and 1,981.70

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Solution

The fourth proportional to 2,240.90, 3,357.30 and 1,981.70 is: 2,968.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.90 : 3,357.30 = 1,981.70 : x
  2. Step 2: Convert to fraction form
    2,240.90/3,357.30 = 1,981.70/x
  3. Step 3: Cross multiply
    2,240.90x = 3,357.30 × 1,981.70
  4. Step 4: Simplify right side
    2,240.90x = 6,653,161.41
  5. Step 5: Solve for x
    x = 6,653,161.41/2,240.90
  6. Step 6: Final answer
    x = 2,968.97

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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.