Home / 8,705.49-13,057.83-2,131.33

Finding the Fourth Proportional to 8,705.49, 13,057.83 and 2,131.33

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Solution

The fourth proportional to 8,705.49, 13,057.83 and 2,131.33 is: 3,196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.49 : 13,057.83 = 2,131.33 : x
  2. Step 2: Convert to fraction form
    8,705.49/13,057.83 = 2,131.33/x
  3. Step 3: Cross multiply
    8,705.49x = 13,057.83 × 2,131.33
  4. Step 4: Simplify right side
    8,705.49x = 27,830,512.17
  5. Step 5: Solve for x
    x = 27,830,512.17/8,705.49
  6. Step 6: Final answer
    x = 3,196.89

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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.