Home / 3,642.45-5,455.42-2,986.35

Finding the Fourth Proportional to 3,642.45, 5,455.42 and 2,986.35

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Solution

The fourth proportional to 3,642.45, 5,455.42 and 2,986.35 is: 4,472.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642.45 : 5,455.42 = 2,986.35 : x
  2. Step 2: Convert to fraction form
    3,642.45/5,455.42 = 2,986.35/x
  3. Step 3: Cross multiply
    3,642.45x = 5,455.42 × 2,986.35
  4. Step 4: Simplify right side
    3,642.45x = 16,291,793.52
  5. Step 5: Solve for x
    x = 16,291,793.52/3,642.45
  6. Step 6: Final answer
    x = 4,472.76

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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.