Home / 3,003.09-4,504.91-811.80

Finding the Fourth Proportional to 3,003.09, 4,504.91 and 811.80

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Solution

The fourth proportional to 3,003.09, 4,504.91 and 811.80 is: 1,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.09 : 4,504.91 = 811.80 : x
  2. Step 2: Convert to fraction form
    3,003.09/4,504.91 = 811.80/x
  3. Step 3: Cross multiply
    3,003.09x = 4,504.91 × 811.80
  4. Step 4: Simplify right side
    3,003.09x = 3,657,081.88
  5. Step 5: Solve for x
    x = 3,657,081.88/3,003.09
  6. Step 6: Final answer
    x = 1,217.77

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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.