Home / 4,215.20-6,322.74-1,906.70

Finding the Fourth Proportional to 4,215.20, 6,322.74 and 1,906.70

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Solution

The fourth proportional to 4,215.20, 6,322.74 and 1,906.70 is: 2,860.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.20 : 6,322.74 = 1,906.70 : x
  2. Step 2: Convert to fraction form
    4,215.20/6,322.74 = 1,906.70/x
  3. Step 3: Cross multiply
    4,215.20x = 6,322.74 × 1,906.70
  4. Step 4: Simplify right side
    4,215.20x = 12,055,568.36
  5. Step 5: Solve for x
    x = 12,055,568.36/4,215.20
  6. Step 6: Final answer
    x = 2,860.02

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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.