Home / 3,270.45-4,905.98-1,079.20

Finding the Fourth Proportional to 3,270.45, 4,905.98 and 1,079.20

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Solution

The fourth proportional to 3,270.45, 4,905.98 and 1,079.20 is: 1,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.45 : 4,905.98 = 1,079.20 : x
  2. Step 2: Convert to fraction form
    3,270.45/4,905.98 = 1,079.20/x
  3. Step 3: Cross multiply
    3,270.45x = 4,905.98 × 1,079.20
  4. Step 4: Simplify right side
    3,270.45x = 5,294,533.62
  5. Step 5: Solve for x
    x = 5,294,533.62/3,270.45
  6. Step 6: Final answer
    x = 1,618.90

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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.