Home / 5,205.96-7,182.72-3,109.68

Finding the Fourth Proportional to 5,205.96, 7,182.72 and 3,109.68

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Solution

The fourth proportional to 5,205.96, 7,182.72 and 3,109.68 is: 4,290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.96 : 7,182.72 = 3,109.68 : x
  2. Step 2: Convert to fraction form
    5,205.96/7,182.72 = 3,109.68/x
  3. Step 3: Cross multiply
    5,205.96x = 7,182.72 × 3,109.68
  4. Step 4: Simplify right side
    5,205.96x = 22,335,960.73
  5. Step 5: Solve for x
    x = 22,335,960.73/5,205.96
  6. Step 6: Final answer
    x = 4,290.46

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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.