Home / 3,669.74-5,490.95-2,189.75

Finding the Fourth Proportional to 3,669.74, 5,490.95 and 2,189.75

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Solution

The fourth proportional to 3,669.74, 5,490.95 and 2,189.75 is: 3,276.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.74 : 5,490.95 = 2,189.75 : x
  2. Step 2: Convert to fraction form
    3,669.74/5,490.95 = 2,189.75/x
  3. Step 3: Cross multiply
    3,669.74x = 5,490.95 × 2,189.75
  4. Step 4: Simplify right side
    3,669.74x = 12,023,769.36
  5. Step 5: Solve for x
    x = 12,023,769.36/3,669.74
  6. Step 6: Final answer
    x = 3,276.47

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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.