Home / 3,206.40-4,813.20-2,479.20

Finding the Fourth Proportional to 3,206.40, 4,813.20 and 2,479.20

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Solution

The fourth proportional to 3,206.40, 4,813.20 and 2,479.20 is: 3,721.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,206.40 : 4,813.20 = 2,479.20 : x
  2. Step 2: Convert to fraction form
    3,206.40/4,813.20 = 2,479.20/x
  3. Step 3: Cross multiply
    3,206.40x = 4,813.20 × 2,479.20
  4. Step 4: Simplify right side
    3,206.40x = 11,932,885.44
  5. Step 5: Solve for x
    x = 11,932,885.44/3,206.40
  6. Step 6: Final answer
    x = 3,721.58

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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.