Home / 2,221.13-3,332.34-661.13

Finding the Fourth Proportional to 2,221.13, 3,332.34 and 661.13

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Solution

The fourth proportional to 2,221.13, 3,332.34 and 661.13 is: 991.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.13 : 3,332.34 = 661.13 : x
  2. Step 2: Convert to fraction form
    2,221.13/3,332.34 = 661.13/x
  3. Step 3: Cross multiply
    2,221.13x = 3,332.34 × 661.13
  4. Step 4: Simplify right side
    2,221.13x = 2,203,109.94
  5. Step 5: Solve for x
    x = 2,203,109.94/2,221.13
  6. Step 6: Final answer
    x = 991.89

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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.