Home / 4,208.28-6,312.20-1,286.60

Finding the Fourth Proportional to 4,208.28, 6,312.20 and 1,286.60

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Solution

The fourth proportional to 4,208.28, 6,312.20 and 1,286.60 is: 1,929.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,208.28 : 6,312.20 = 1,286.60 : x
  2. Step 2: Convert to fraction form
    4,208.28/6,312.20 = 1,286.60/x
  3. Step 3: Cross multiply
    4,208.28x = 6,312.20 × 1,286.60
  4. Step 4: Simplify right side
    4,208.28x = 8,121,238.53
  5. Step 5: Solve for x
    x = 8,121,238.53/4,208.28
  6. Step 6: Final answer
    x = 1,929.82

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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.