Home / 3,629.10-5,436.45-1,982.70

Finding the Fourth Proportional to 3,629.10, 5,436.45 and 1,982.70

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Solution

The fourth proportional to 3,629.10, 5,436.45 and 1,982.70 is: 2,970.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.10 : 5,436.45 = 1,982.70 : x
  2. Step 2: Convert to fraction form
    3,629.10/5,436.45 = 1,982.70/x
  3. Step 3: Cross multiply
    3,629.10x = 5,436.45 × 1,982.70
  4. Step 4: Simplify right side
    3,629.10x = 10,778,849.42
  5. Step 5: Solve for x
    x = 10,778,849.42/3,629.10
  6. Step 6: Final answer
    x = 2,970.12

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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.