Home / 2,770.82-4,156.26-921.93

Finding the Fourth Proportional to 2,770.82, 4,156.26 and 921.93

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Solution

The fourth proportional to 2,770.82, 4,156.26 and 921.93 is: 1,382.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.82 : 4,156.26 = 921.93 : x
  2. Step 2: Convert to fraction form
    2,770.82/4,156.26 = 921.93/x
  3. Step 3: Cross multiply
    2,770.82x = 4,156.26 × 921.93
  4. Step 4: Simplify right side
    2,770.82x = 3,831,780.78
  5. Step 5: Solve for x
    x = 3,831,780.78/2,770.82
  6. Step 6: Final answer
    x = 1,382.91

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1.5x scale

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.