Home / 7,139.13-10,708.21-2,208.39

Finding the Fourth Proportional to 7,139.13, 10,708.21 and 2,208.39

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Solution

The fourth proportional to 7,139.13, 10,708.21 and 2,208.39 is: 3,312.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.13 : 10,708.21 = 2,208.39 : x
  2. Step 2: Convert to fraction form
    7,139.13/10,708.21 = 2,208.39/x
  3. Step 3: Cross multiply
    7,139.13x = 10,708.21 × 2,208.39
  4. Step 4: Simplify right side
    7,139.13x = 23,647,903.88
  5. Step 5: Solve for x
    x = 23,647,903.88/7,139.13
  6. Step 6: Final answer
    x = 3,312.43

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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.