Home / 3,246.12-4,479.21-1,919.34

Finding the Fourth Proportional to 3,246.12, 4,479.21 and 1,919.34

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Solution

The fourth proportional to 3,246.12, 4,479.21 and 1,919.34 is: 2,648.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.12 : 4,479.21 = 1,919.34 : x
  2. Step 2: Convert to fraction form
    3,246.12/4,479.21 = 1,919.34/x
  3. Step 3: Cross multiply
    3,246.12x = 4,479.21 × 1,919.34
  4. Step 4: Simplify right side
    3,246.12x = 8,597,126.92
  5. Step 5: Solve for x
    x = 8,597,126.92/3,246.12
  6. Step 6: Final answer
    x = 2,648.43

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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.