Home / 8,540.28-12,813.56-3,609.48

Finding the Fourth Proportional to 8,540.28, 12,813.56 and 3,609.48

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Solution

The fourth proportional to 8,540.28, 12,813.56 and 3,609.48 is: 5,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.28 : 12,813.56 = 3,609.48 : x
  2. Step 2: Convert to fraction form
    8,540.28/12,813.56 = 3,609.48/x
  3. Step 3: Cross multiply
    8,540.28x = 12,813.56 × 3,609.48
  4. Step 4: Simplify right side
    8,540.28x = 46,250,288.55
  5. Step 5: Solve for x
    x = 46,250,288.55/8,540.28
  6. Step 6: Final answer
    x = 5,415.55

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1.5x scale

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.