Home / 2,216.57-3,326.91-1,121.70

Finding the Fourth Proportional to 2,216.57, 3,326.91 and 1,121.70

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Solution

The fourth proportional to 2,216.57, 3,326.91 and 1,121.70 is: 1,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.57 : 3,326.91 = 1,121.70 : x
  2. Step 2: Convert to fraction form
    2,216.57/3,326.91 = 1,121.70/x
  3. Step 3: Cross multiply
    2,216.57x = 3,326.91 × 1,121.70
  4. Step 4: Simplify right side
    2,216.57x = 3,731,803.22
  5. Step 5: Solve for x
    x = 3,731,803.22/2,216.57
  6. Step 6: Final answer
    x = 1,683.60

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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.