Home / 5,627.68-7,765.77-3,109.39

Finding the Fourth Proportional to 5,627.68, 7,765.77 and 3,109.39

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Solution

The fourth proportional to 5,627.68, 7,765.77 and 3,109.39 is: 4,290.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,627.68 : 7,765.77 = 3,109.39 : x
  2. Step 2: Convert to fraction form
    5,627.68/7,765.77 = 3,109.39/x
  3. Step 3: Cross multiply
    5,627.68x = 7,765.77 × 3,109.39
  4. Step 4: Simplify right side
    5,627.68x = 24,146,799.83
  5. Step 5: Solve for x
    x = 24,146,799.83/5,627.68
  6. Step 6: Final answer
    x = 4,290.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.