Home / 7,120.03-9,825.28-3,975.61

Finding the Fourth Proportional to 7,120.03, 9,825.28 and 3,975.61

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Solution

The fourth proportional to 7,120.03, 9,825.28 and 3,975.61 is: 5,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.03 : 9,825.28 = 3,975.61 : x
  2. Step 2: Convert to fraction form
    7,120.03/9,825.28 = 3,975.61/x
  3. Step 3: Cross multiply
    7,120.03x = 9,825.28 × 3,975.61
  4. Step 4: Simplify right side
    7,120.03x = 39,061,481.42
  5. Step 5: Solve for x
    x = 39,061,481.42/7,120.03
  6. Step 6: Final answer
    x = 5,486.14

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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.