Home / 2,221.55-3,332.50-640.27

Finding the Fourth Proportional to 2,221.55, 3,332.50 and 640.27

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Solution

The fourth proportional to 2,221.55, 3,332.50 and 640.27 is: 960.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.55 : 3,332.50 = 640.27 : x
  2. Step 2: Convert to fraction form
    2,221.55/3,332.50 = 640.27/x
  3. Step 3: Cross multiply
    2,221.55x = 3,332.50 × 640.27
  4. Step 4: Simplify right side
    2,221.55x = 2,133,699.78
  5. Step 5: Solve for x
    x = 2,133,699.78/2,221.55
  6. Step 6: Final answer
    x = 960.46

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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.