Home / 2,217.70-3,326.28-1,121.50

Finding the Fourth Proportional to 2,217.70, 3,326.28 and 1,121.50

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Solution

The fourth proportional to 2,217.70, 3,326.28 and 1,121.50 is: 1,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.70 : 3,326.28 = 1,121.50 : x
  2. Step 2: Convert to fraction form
    2,217.70/3,326.28 = 1,121.50/x
  3. Step 3: Cross multiply
    2,217.70x = 3,326.28 × 1,121.50
  4. Step 4: Simplify right side
    2,217.70x = 3,730,423.02
  5. Step 5: Solve for x
    x = 3,730,423.02/2,217.70
  6. Step 6: Final answer
    x = 1,682.11

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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.