Home / 5,185.72-7,778.57-3,106.35

Finding the Fourth Proportional to 5,185.72, 7,778.57 and 3,106.35

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Solution

The fourth proportional to 5,185.72, 7,778.57 and 3,106.35 is: 4,659.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.72 : 7,778.57 = 3,106.35 : x
  2. Step 2: Convert to fraction form
    5,185.72/7,778.57 = 3,106.35/x
  3. Step 3: Cross multiply
    5,185.72x = 7,778.57 × 3,106.35
  4. Step 4: Simplify right side
    5,185.72x = 24,162,945.39
  5. Step 5: Solve for x
    x = 24,162,945.39/5,185.72
  6. Step 6: Final answer
    x = 4,659.51

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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.