Home / 2,147.24-3,220.96-667.47

Finding the Fourth Proportional to 2,147.24, 3,220.96 and 667.47

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Solution

The fourth proportional to 2,147.24, 3,220.96 and 667.47 is: 1,001.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.24 : 3,220.96 = 667.47 : x
  2. Step 2: Convert to fraction form
    2,147.24/3,220.96 = 667.47/x
  3. Step 3: Cross multiply
    2,147.24x = 3,220.96 × 667.47
  4. Step 4: Simplify right side
    2,147.24x = 2,149,890.83
  5. Step 5: Solve for x
    x = 2,149,890.83/2,147.24
  6. Step 6: Final answer
    x = 1,001.24

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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.