Home / 2,216.32-3,326.53-1,121.45

Finding the Fourth Proportional to 2,216.32, 3,326.53 and 1,121.45

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Solution

The fourth proportional to 2,216.32, 3,326.53 and 1,121.45 is: 1,683.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.32 : 3,326.53 = 1,121.45 : x
  2. Step 2: Convert to fraction form
    2,216.32/3,326.53 = 1,121.45/x
  3. Step 3: Cross multiply
    2,216.32x = 3,326.53 × 1,121.45
  4. Step 4: Simplify right side
    2,216.32x = 3,730,537.07
  5. Step 5: Solve for x
    x = 3,730,537.07/2,216.32
  6. Step 6: Final answer
    x = 1,683.21

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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.