Home / 7,139.05-10,708.88-2,208.79

Finding the Fourth Proportional to 7,139.05, 10,708.88 and 2,208.79

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Solution

The fourth proportional to 7,139.05, 10,708.88 and 2,208.79 is: 3,313.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.05 : 10,708.88 = 2,208.79 : x
  2. Step 2: Convert to fraction form
    7,139.05/10,708.88 = 2,208.79/x
  3. Step 3: Cross multiply
    7,139.05x = 10,708.88 × 2,208.79
  4. Step 4: Simplify right side
    7,139.05x = 23,653,627.80
  5. Step 5: Solve for x
    x = 23,653,627.80/7,139.05
  6. Step 6: Final answer
    x = 3,313.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.