Home / 3,188.20-4,782.30-2,151.40

Finding the Fourth Proportional to 3,188.20, 4,782.30 and 2,151.40

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Solution

The fourth proportional to 3,188.20, 4,782.30 and 2,151.40 is: 3,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.20 : 4,782.30 = 2,151.40 : x
  2. Step 2: Convert to fraction form
    3,188.20/4,782.30 = 2,151.40/x
  3. Step 3: Cross multiply
    3,188.20x = 4,782.30 × 2,151.40
  4. Step 4: Simplify right side
    3,188.20x = 10,288,640.22
  5. Step 5: Solve for x
    x = 10,288,640.22/3,188.20
  6. Step 6: Final answer
    x = 3,227.10

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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.