Home / 2,771.34-4,157.28-921.96

Finding the Fourth Proportional to 2,771.34, 4,157.28 and 921.96

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Solution

The fourth proportional to 2,771.34, 4,157.28 and 921.96 is: 1,383.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.34 : 4,157.28 = 921.96 : x
  2. Step 2: Convert to fraction form
    2,771.34/4,157.28 = 921.96/x
  3. Step 3: Cross multiply
    2,771.34x = 4,157.28 × 921.96
  4. Step 4: Simplify right side
    2,771.34x = 3,832,845.87
  5. Step 5: Solve for x
    x = 3,832,845.87/2,771.34
  6. Step 6: Final answer
    x = 1,383.03

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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.