Home / 7,077.72-9,767.28-3,933.96

Finding the Fourth Proportional to 7,077.72, 9,767.28 and 3,933.96

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Solution

The fourth proportional to 7,077.72, 9,767.28 and 3,933.96 is: 5,428.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.72 : 9,767.28 = 3,933.96 : x
  2. Step 2: Convert to fraction form
    7,077.72/9,767.28 = 3,933.96/x
  3. Step 3: Cross multiply
    7,077.72x = 9,767.28 × 3,933.96
  4. Step 4: Simplify right side
    7,077.72x = 38,424,088.83
  5. Step 5: Solve for x
    x = 38,424,088.83/7,077.72
  6. Step 6: Final answer
    x = 5,428.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.