Home / 7,139.43-10,705.23-2,207.70

Finding the Fourth Proportional to 7,139.43, 10,705.23 and 2,207.70

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Solution

The fourth proportional to 7,139.43, 10,705.23 and 2,207.70 is: 3,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.43 : 10,705.23 = 2,207.70 : x
  2. Step 2: Convert to fraction form
    7,139.43/10,705.23 = 2,207.70/x
  3. Step 3: Cross multiply
    7,139.43x = 10,705.23 × 2,207.70
  4. Step 4: Simplify right side
    7,139.43x = 23,633,936.27
  5. Step 5: Solve for x
    x = 23,633,936.27/7,139.43
  6. Step 6: Final answer
    x = 3,310.34

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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.