Home / 3,881.28-5,812.80-3,294.72

Finding the Fourth Proportional to 3,881.28, 5,812.80 and 3,294.72

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Solution

The fourth proportional to 3,881.28, 5,812.80 and 3,294.72 is: 4,934.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.28 : 5,812.80 = 3,294.72 : x
  2. Step 2: Convert to fraction form
    3,881.28/5,812.80 = 3,294.72/x
  3. Step 3: Cross multiply
    3,881.28x = 5,812.80 × 3,294.72
  4. Step 4: Simplify right side
    3,881.28x = 19,151,548.42
  5. Step 5: Solve for x
    x = 19,151,548.42/3,881.28
  6. Step 6: Final answer
    x = 4,934.34

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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.