Home / 2,220.32-3,328.80-1,245.44

Finding the Fourth Proportional to 2,220.32, 3,328.80 and 1,245.44

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Solution

The fourth proportional to 2,220.32, 3,328.80 and 1,245.44 is: 1,867.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.32 : 3,328.80 = 1,245.44 : x
  2. Step 2: Convert to fraction form
    2,220.32/3,328.80 = 1,245.44/x
  3. Step 3: Cross multiply
    2,220.32x = 3,328.80 × 1,245.44
  4. Step 4: Simplify right side
    2,220.32x = 4,145,820.67
  5. Step 5: Solve for x
    x = 4,145,820.67/2,220.32
  6. Step 6: Final answer
    x = 1,867.22

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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.