Home / 4,206.20-6,310.20-1,284.80

Finding the Fourth Proportional to 4,206.20, 6,310.20 and 1,284.80

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Solution

The fourth proportional to 4,206.20, 6,310.20 and 1,284.80 is: 1,927.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,206.20 : 6,310.20 = 1,284.80 : x
  2. Step 2: Convert to fraction form
    4,206.20/6,310.20 = 1,284.80/x
  3. Step 3: Cross multiply
    4,206.20x = 6,310.20 × 1,284.80
  4. Step 4: Simplify right side
    4,206.20x = 8,107,344.96
  5. Step 5: Solve for x
    x = 8,107,344.96/4,206.20
  6. Step 6: Final answer
    x = 1,927.47

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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.