Home / 2,770.33-4,156.19-921.45

Finding the Fourth Proportional to 2,770.33, 4,156.19 and 921.45

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Solution

The fourth proportional to 2,770.33, 4,156.19 and 921.45 is: 1,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.33 : 4,156.19 = 921.45 : x
  2. Step 2: Convert to fraction form
    2,770.33/4,156.19 = 921.45/x
  3. Step 3: Cross multiply
    2,770.33x = 4,156.19 × 921.45
  4. Step 4: Simplify right side
    2,770.33x = 3,829,721.28
  5. Step 5: Solve for x
    x = 3,829,721.28/2,770.33
  6. Step 6: Final answer
    x = 1,382.41

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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.