Home / 2,222.13-3,332.61-661.72

Finding the Fourth Proportional to 2,222.13, 3,332.61 and 661.72

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Solution

The fourth proportional to 2,222.13, 3,332.61 and 661.72 is: 992.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,222.13 : 3,332.61 = 661.72 : x
  2. Step 2: Convert to fraction form
    2,222.13/3,332.61 = 661.72/x
  3. Step 3: Cross multiply
    2,222.13x = 3,332.61 × 661.72
  4. Step 4: Simplify right side
    2,222.13x = 2,205,254.69
  5. Step 5: Solve for x
    x = 2,205,254.69/2,222.13
  6. Step 6: Final answer
    x = 992.41

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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.