Home / 3,280.95-4,921.49-1,331.82

Finding the Fourth Proportional to 3,280.95, 4,921.49 and 1,331.82

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Solution

The fourth proportional to 3,280.95, 4,921.49 and 1,331.82 is: 1,997.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.95 : 4,921.49 = 1,331.82 : x
  2. Step 2: Convert to fraction form
    3,280.95/4,921.49 = 1,331.82/x
  3. Step 3: Cross multiply
    3,280.95x = 4,921.49 × 1,331.82
  4. Step 4: Simplify right side
    3,280.95x = 6,554,538.81
  5. Step 5: Solve for x
    x = 6,554,538.81/3,280.95
  6. Step 6: Final answer
    x = 1,997.76

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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.