Home / 2,989.80-4,126.04-1,645.52

Finding the Fourth Proportional to 2,989.80, 4,126.04 and 1,645.52

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Solution

The fourth proportional to 2,989.80, 4,126.04 and 1,645.52 is: 2,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.80 : 4,126.04 = 1,645.52 : x
  2. Step 2: Convert to fraction form
    2,989.80/4,126.04 = 1,645.52/x
  3. Step 3: Cross multiply
    2,989.80x = 4,126.04 × 1,645.52
  4. Step 4: Simplify right side
    2,989.80x = 6,789,452.48
  5. Step 5: Solve for x
    x = 6,789,452.48/2,989.80
  6. Step 6: Final answer
    x = 2,270.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.