Home / 7,120.12-9,825.96-3,976.52

Finding the Fourth Proportional to 7,120.12, 9,825.96 and 3,976.52

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Solution

The fourth proportional to 7,120.12, 9,825.96 and 3,976.52 is: 5,487.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.12 : 9,825.96 = 3,976.52 : x
  2. Step 2: Convert to fraction form
    7,120.12/9,825.96 = 3,976.52/x
  3. Step 3: Cross multiply
    7,120.12x = 9,825.96 × 3,976.52
  4. Step 4: Simplify right side
    7,120.12x = 39,073,126.46
  5. Step 5: Solve for x
    x = 39,073,126.46/7,120.12
  6. Step 6: Final answer
    x = 5,487.71

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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.