Home / 3,003.19-4,505.04-811.87

Finding the Fourth Proportional to 3,003.19, 4,505.04 and 811.87

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Solution

The fourth proportional to 3,003.19, 4,505.04 and 811.87 is: 1,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.19 : 4,505.04 = 811.87 : x
  2. Step 2: Convert to fraction form
    3,003.19/4,505.04 = 811.87/x
  3. Step 3: Cross multiply
    3,003.19x = 4,505.04 × 811.87
  4. Step 4: Simplify right side
    3,003.19x = 3,657,506.82
  5. Step 5: Solve for x
    x = 3,657,506.82/3,003.19
  6. Step 6: Final answer
    x = 1,217.87

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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.