Home / 7,820.74-11,723.82-3,920.59

Finding the Fourth Proportional to 7,820.74, 11,723.82 and 3,920.59

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Solution

The fourth proportional to 7,820.74, 11,723.82 and 3,920.59 is: 5,877.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.74 : 11,723.82 = 3,920.59 : x
  2. Step 2: Convert to fraction form
    7,820.74/11,723.82 = 3,920.59/x
  3. Step 3: Cross multiply
    7,820.74x = 11,723.82 × 3,920.59
  4. Step 4: Simplify right side
    7,820.74x = 45,964,291.45
  5. Step 5: Solve for x
    x = 45,964,291.45/7,820.74
  6. Step 6: Final answer
    x = 5,877.23

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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.