Home / 3,200.83-4,800.03-1,120.21

Finding the Fourth Proportional to 3,200.83, 4,800.03 and 1,120.21

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Solution

The fourth proportional to 3,200.83, 4,800.03 and 1,120.21 is: 1,679.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,200.83 : 4,800.03 = 1,120.21 : x
  2. Step 2: Convert to fraction form
    3,200.83/4,800.03 = 1,120.21/x
  3. Step 3: Cross multiply
    3,200.83x = 4,800.03 × 1,120.21
  4. Step 4: Simplify right side
    3,200.83x = 5,377,041.61
  5. Step 5: Solve for x
    x = 5,377,041.61/3,200.83
  6. Step 6: Final answer
    x = 1,679.89

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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.