Home / 7,077.85-9,767.43-3,934.04

Finding the Fourth Proportional to 7,077.85, 9,767.43 and 3,934.04

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Solution

The fourth proportional to 7,077.85, 9,767.43 and 3,934.04 is: 5,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.85 : 9,767.43 = 3,934.04 : x
  2. Step 2: Convert to fraction form
    7,077.85/9,767.43 = 3,934.04/x
  3. Step 3: Cross multiply
    7,077.85x = 9,767.43 × 3,934.04
  4. Step 4: Simplify right side
    7,077.85x = 38,425,411.48
  5. Step 5: Solve for x
    x = 38,425,411.48/7,077.85
  6. Step 6: Final answer
    x = 5,428.97

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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.