Home / 2,215.53-3,311.21-2,040.39

Finding the Fourth Proportional to 2,215.53, 3,311.21 and 2,040.39

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Solution

The fourth proportional to 2,215.53, 3,311.21 and 2,040.39 is: 3,049.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.53 : 3,311.21 = 2,040.39 : x
  2. Step 2: Convert to fraction form
    2,215.53/3,311.21 = 2,040.39/x
  3. Step 3: Cross multiply
    2,215.53x = 3,311.21 × 2,040.39
  4. Step 4: Simplify right side
    2,215.53x = 6,756,149.57
  5. Step 5: Solve for x
    x = 6,756,149.57/2,215.53
  6. Step 6: Final answer
    x = 3,049.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.