Home / 2,220.77-3,330.48-921.94

Finding the Fourth Proportional to 2,220.77, 3,330.48 and 921.94

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Solution

The fourth proportional to 2,220.77, 3,330.48 and 921.94 is: 1,382.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.77 : 3,330.48 = 921.94 : x
  2. Step 2: Convert to fraction form
    2,220.77/3,330.48 = 921.94/x
  3. Step 3: Cross multiply
    2,220.77x = 3,330.48 × 921.94
  4. Step 4: Simplify right side
    2,220.77x = 3,070,497.86
  5. Step 5: Solve for x
    x = 3,070,497.86/2,220.77
  6. Step 6: Final answer
    x = 1,382.63

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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.