Home / 5,156.45-7,115.41-3,166.68

Finding the Fourth Proportional to 5,156.45, 7,115.41 and 3,166.68

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Solution

The fourth proportional to 5,156.45, 7,115.41 and 3,166.68 is: 4,369.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.45 : 7,115.41 = 3,166.68 : x
  2. Step 2: Convert to fraction form
    5,156.45/7,115.41 = 3,166.68/x
  3. Step 3: Cross multiply
    5,156.45x = 7,115.41 × 3,166.68
  4. Step 4: Simplify right side
    5,156.45x = 22,532,226.54
  5. Step 5: Solve for x
    x = 22,532,226.54/5,156.45
  6. Step 6: Final answer
    x = 4,369.72

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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.