Home / 5,099.60-7,651.68-2,178.56

Finding the Fourth Proportional to 5,099.60, 7,651.68 and 2,178.56

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Solution

The fourth proportional to 5,099.60, 7,651.68 and 2,178.56 is: 3,268.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,099.60 : 7,651.68 = 2,178.56 : x
  2. Step 2: Convert to fraction form
    5,099.60/7,651.68 = 2,178.56/x
  3. Step 3: Cross multiply
    5,099.60x = 7,651.68 × 2,178.56
  4. Step 4: Simplify right side
    5,099.60x = 16,669,643.98
  5. Step 5: Solve for x
    x = 16,669,643.98/5,099.60
  6. Step 6: Final answer
    x = 3,268.81

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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.