Home / 7,120.82-9,826.67-3,934.31

Finding the Fourth Proportional to 7,120.82, 9,826.67 and 3,934.31

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Solution

The fourth proportional to 7,120.82, 9,826.67 and 3,934.31 is: 5,429.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.82 : 9,826.67 = 3,934.31 : x
  2. Step 2: Convert to fraction form
    7,120.82/9,826.67 = 3,934.31/x
  3. Step 3: Cross multiply
    7,120.82x = 9,826.67 × 3,934.31
  4. Step 4: Simplify right side
    7,120.82x = 38,661,097.24
  5. Step 5: Solve for x
    x = 38,661,097.24/7,120.82
  6. Step 6: Final answer
    x = 5,429.31

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1.5x scale

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.