Home / 6,107.37-8,428.20-3,312.87

Finding the Fourth Proportional to 6,107.37, 8,428.20 and 3,312.87

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Solution

The fourth proportional to 6,107.37, 8,428.20 and 3,312.87 is: 4,571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,107.37 : 8,428.20 = 3,312.87 : x
  2. Step 2: Convert to fraction form
    6,107.37/8,428.20 = 3,312.87/x
  3. Step 3: Cross multiply
    6,107.37x = 8,428.20 × 3,312.87
  4. Step 4: Simplify right side
    6,107.37x = 27,921,530.93
  5. Step 5: Solve for x
    x = 27,921,530.93/6,107.37
  6. Step 6: Final answer
    x = 4,571.78

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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.