Home / 7,820.85-11,731.27-2,630.37

Finding the Fourth Proportional to 7,820.85, 11,731.27 and 2,630.37

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Solution

The fourth proportional to 7,820.85, 11,731.27 and 2,630.37 is: 3,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.85 : 11,731.27 = 2,630.37 : x
  2. Step 2: Convert to fraction form
    7,820.85/11,731.27 = 2,630.37/x
  3. Step 3: Cross multiply
    7,820.85x = 11,731.27 × 2,630.37
  4. Step 4: Simplify right side
    7,820.85x = 30,857,580.67
  5. Step 5: Solve for x
    x = 30,857,580.67/7,820.85
  6. Step 6: Final answer
    x = 3,945.55

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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.