Home / 2,110.32-3,166.90-811.89

Finding the Fourth Proportional to 2,110.32, 3,166.90 and 811.89

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Solution

The fourth proportional to 2,110.32, 3,166.90 and 811.89 is: 1,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.32 : 3,166.90 = 811.89 : x
  2. Step 2: Convert to fraction form
    2,110.32/3,166.90 = 811.89/x
  3. Step 3: Cross multiply
    2,110.32x = 3,166.90 × 811.89
  4. Step 4: Simplify right side
    2,110.32x = 2,571,172.41
  5. Step 5: Solve for x
    x = 2,571,172.41/2,110.32
  6. Step 6: Final answer
    x = 1,218.38

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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.