Home / 5,186.87-7,780.78-2,066.12

Finding the Fourth Proportional to 5,186.87, 7,780.78 and 2,066.12

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Solution

The fourth proportional to 5,186.87, 7,780.78 and 2,066.12 is: 3,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.87 : 7,780.78 = 2,066.12 : x
  2. Step 2: Convert to fraction form
    5,186.87/7,780.78 = 2,066.12/x
  3. Step 3: Cross multiply
    5,186.87x = 7,780.78 × 2,066.12
  4. Step 4: Simplify right side
    5,186.87x = 16,076,025.17
  5. Step 5: Solve for x
    x = 16,076,025.17/5,186.87
  6. Step 6: Final answer
    x = 3,099.37

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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.