Home / 3,003.83-4,505.75-812.55

Finding the Fourth Proportional to 3,003.83, 4,505.75 and 812.55

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Solution

The fourth proportional to 3,003.83, 4,505.75 and 812.55 is: 1,218.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.83 : 4,505.75 = 812.55 : x
  2. Step 2: Convert to fraction form
    3,003.83/4,505.75 = 812.55/x
  3. Step 3: Cross multiply
    3,003.83x = 4,505.75 × 812.55
  4. Step 4: Simplify right side
    3,003.83x = 3,661,143.10
  5. Step 5: Solve for x
    x = 3,661,143.10/3,003.83
  6. Step 6: Final answer
    x = 1,218.83

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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.