Home / 7,120.46-9,825.36-3,976.58

Finding the Fourth Proportional to 7,120.46, 9,825.36 and 3,976.58

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Solution

The fourth proportional to 7,120.46, 9,825.36 and 3,976.58 is: 5,487.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.46 : 9,825.36 = 3,976.58 : x
  2. Step 2: Convert to fraction form
    7,120.46/9,825.36 = 3,976.58/x
  3. Step 3: Cross multiply
    7,120.46x = 9,825.36 × 3,976.58
  4. Step 4: Simplify right side
    7,120.46x = 39,071,330.07
  5. Step 5: Solve for x
    x = 39,071,330.07/7,120.46
  6. Step 6: Final answer
    x = 5,487.19

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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.