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Finding the Fourth Proportional to 2,221.35, 3,332.07 and 661.37

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Solution

The fourth proportional to 2,221.35, 3,332.07 and 661.37 is: 992.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.35 : 3,332.07 = 661.37 : x
  2. Step 2: Convert to fraction form
    2,221.35/3,332.07 = 661.37/x
  3. Step 3: Cross multiply
    2,221.35x = 3,332.07 × 661.37
  4. Step 4: Simplify right side
    2,221.35x = 2,203,714.48
  5. Step 5: Solve for x
    x = 2,203,714.48/2,221.35
  6. Step 6: Final answer
    x = 992.06

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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.