Home / 7,119.85-9,825.54-3,976.04

Finding the Fourth Proportional to 7,119.85, 9,825.54 and 3,976.04

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Solution

The fourth proportional to 7,119.85, 9,825.54 and 3,976.04 is: 5,487.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.85 : 9,825.54 = 3,976.04 : x
  2. Step 2: Convert to fraction form
    7,119.85/9,825.54 = 3,976.04/x
  3. Step 3: Cross multiply
    7,119.85x = 9,825.54 × 3,976.04
  4. Step 4: Simplify right side
    7,119.85x = 39,066,740.06
  5. Step 5: Solve for x
    x = 39,066,740.06/7,119.85
  6. Step 6: Final answer
    x = 5,487.02

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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.