Home / 3,213.08-4,431.56-2,220

Finding the Fourth Proportional to 3,213.08, 4,431.56 and 2,220

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Solution

The fourth proportional to 3,213.08, 4,431.56 and 2,220 is: 3,061.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.08 : 4,431.56 = 2,220 : x
  2. Step 2: Convert to fraction form
    3,213.08/4,431.56 = 2,220/x
  3. Step 3: Cross multiply
    3,213.08x = 4,431.56 × 2,220
  4. Step 4: Simplify right side
    3,213.08x = 9,838,063.20
  5. Step 5: Solve for x
    x = 9,838,063.20/3,213.08
  6. Step 6: Final answer
    x = 3,061.88

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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.