Home / 3,618.24-4,991.04-2,220

Finding the Fourth Proportional to 3,618.24, 4,991.04 and 2,220

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Solution

The fourth proportional to 3,618.24, 4,991.04 and 2,220 is: 3,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.24 : 4,991.04 = 2,220 : x
  2. Step 2: Convert to fraction form
    3,618.24/4,991.04 = 2,220/x
  3. Step 3: Cross multiply
    3,618.24x = 4,991.04 × 2,220
  4. Step 4: Simplify right side
    3,618.24x = 11,080,108.80
  5. Step 5: Solve for x
    x = 11,080,108.80/3,618.24
  6. Step 6: Final answer
    x = 3,062.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.