Home / 2,221.29-3,332.60-661.35

Finding the Fourth Proportional to 2,221.29, 3,332.60 and 661.35

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Solution

The fourth proportional to 2,221.29, 3,332.60 and 661.35 is: 992.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.29 : 3,332.60 = 661.35 : x
  2. Step 2: Convert to fraction form
    2,221.29/3,332.60 = 661.35/x
  3. Step 3: Cross multiply
    2,221.29x = 3,332.60 × 661.35
  4. Step 4: Simplify right side
    2,221.29x = 2,204,001.69
  5. Step 5: Solve for x
    x = 2,204,001.69/2,221.29
  6. Step 6: Final answer
    x = 992.22

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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.