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Finding the Fourth Proportional to 3,725.04, 5,581.08 and 1,990.56

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Solution

The fourth proportional to 3,725.04, 5,581.08 and 1,990.56 is: 2,982.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,725.04 : 5,581.08 = 1,990.56 : x
  2. Step 2: Convert to fraction form
    3,725.04/5,581.08 = 1,990.56/x
  3. Step 3: Cross multiply
    3,725.04x = 5,581.08 × 1,990.56
  4. Step 4: Simplify right side
    3,725.04x = 11,109,474.60
  5. Step 5: Solve for x
    x = 11,109,474.60/3,725.04
  6. Step 6: Final answer
    x = 2,982.38

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1.5x scale

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.