Home / 4,321.13-6,480.39-1,200.38

Finding the Fourth Proportional to 4,321.13, 6,480.39 and 1,200.38

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Solution

The fourth proportional to 4,321.13, 6,480.39 and 1,200.38 is: 1,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,321.13 : 6,480.39 = 1,200.38 : x
  2. Step 2: Convert to fraction form
    4,321.13/6,480.39 = 1,200.38/x
  3. Step 3: Cross multiply
    4,321.13x = 6,480.39 × 1,200.38
  4. Step 4: Simplify right side
    4,321.13x = 7,778,930.55
  5. Step 5: Solve for x
    x = 7,778,930.55/4,321.13
  6. Step 6: Final answer
    x = 1,800.21

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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.