Home / 6,286.10-9,428.85-2,125.70

Finding the Fourth Proportional to 6,286.10, 9,428.85 and 2,125.70

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Solution

The fourth proportional to 6,286.10, 9,428.85 and 2,125.70 is: 3,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,286.10 : 9,428.85 = 2,125.70 : x
  2. Step 2: Convert to fraction form
    6,286.10/9,428.85 = 2,125.70/x
  3. Step 3: Cross multiply
    6,286.10x = 9,428.85 × 2,125.70
  4. Step 4: Simplify right side
    6,286.10x = 20,042,906.45
  5. Step 5: Solve for x
    x = 20,042,906.45/6,286.10
  6. Step 6: Final answer
    x = 3,188.45

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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.