Home / 7,120.14-9,826.24-3,976.34

Finding the Fourth Proportional to 7,120.14, 9,826.24 and 3,976.34

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Solution

The fourth proportional to 7,120.14, 9,826.24 and 3,976.34 is: 5,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.14 : 9,826.24 = 3,976.34 : x
  2. Step 2: Convert to fraction form
    7,120.14/9,826.24 = 3,976.34/x
  3. Step 3: Cross multiply
    7,120.14x = 9,826.24 × 3,976.34
  4. Step 4: Simplify right side
    7,120.14x = 39,072,471.16
  5. Step 5: Solve for x
    x = 39,072,471.16/7,120.14
  6. Step 6: Final answer
    x = 5,487.60

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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.