Home / 7,077.84-9,767.37-3,934

Finding the Fourth Proportional to 7,077.84, 9,767.37 and 3,934

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Solution

The fourth proportional to 7,077.84, 9,767.37 and 3,934 is: 5,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.84 : 9,767.37 = 3,934 : x
  2. Step 2: Convert to fraction form
    7,077.84/9,767.37 = 3,934/x
  3. Step 3: Cross multiply
    7,077.84x = 9,767.37 × 3,934
  4. Step 4: Simplify right side
    7,077.84x = 38,424,833.58
  5. Step 5: Solve for x
    x = 38,424,833.58/7,077.84
  6. Step 6: Final answer
    x = 5,428.89

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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.