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Finding the Fourth Proportional to 2,221.95, 3,333.47 and 661.95

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Solution

The fourth proportional to 2,221.95, 3,333.47 and 661.95 is: 993.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.95 : 3,333.47 = 661.95 : x
  2. Step 2: Convert to fraction form
    2,221.95/3,333.47 = 661.95/x
  3. Step 3: Cross multiply
    2,221.95x = 3,333.47 × 661.95
  4. Step 4: Simplify right side
    2,221.95x = 2,206,590.47
  5. Step 5: Solve for x
    x = 2,206,590.47/2,221.95
  6. Step 6: Final answer
    x = 993.09

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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.