Home / 3,270.18-4,905.22-1,321

Finding the Fourth Proportional to 3,270.18, 4,905.22 and 1,321

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Solution

The fourth proportional to 3,270.18, 4,905.22 and 1,321 is: 1,981.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.18 : 4,905.22 = 1,321 : x
  2. Step 2: Convert to fraction form
    3,270.18/4,905.22 = 1,321/x
  3. Step 3: Cross multiply
    3,270.18x = 4,905.22 × 1,321
  4. Step 4: Simplify right side
    3,270.18x = 6,479,795.62
  5. Step 5: Solve for x
    x = 6,479,795.62/3,270.18
  6. Step 6: Final answer
    x = 1,981.48

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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.