Home / 2,222.26-3,333.40-761.20

Finding the Fourth Proportional to 2,222.26, 3,333.40 and 761.20

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Solution

The fourth proportional to 2,222.26, 3,333.40 and 761.20 is: 1,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,222.26 : 3,333.40 = 761.20 : x
  2. Step 2: Convert to fraction form
    2,222.26/3,333.40 = 761.20/x
  3. Step 3: Cross multiply
    2,222.26x = 3,333.40 × 761.20
  4. Step 4: Simplify right side
    2,222.26x = 2,537,384.08
  5. Step 5: Solve for x
    x = 2,537,384.08/2,222.26
  6. Step 6: Final answer
    x = 1,141.80

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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.