Home / 7,120.26-9,826.14-3,976.68

Finding the Fourth Proportional to 7,120.26, 9,826.14 and 3,976.68

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Solution

The fourth proportional to 7,120.26, 9,826.14 and 3,976.68 is: 5,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.26 : 9,826.14 = 3,976.68 : x
  2. Step 2: Convert to fraction form
    7,120.26/9,826.14 = 3,976.68/x
  3. Step 3: Cross multiply
    7,120.26x = 9,826.14 × 3,976.68
  4. Step 4: Simplify right side
    7,120.26x = 39,075,414.42
  5. Step 5: Solve for x
    x = 39,075,414.42/7,120.26
  6. Step 6: Final answer
    x = 5,487.92

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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.