Home / 8,705.05-13,057.61-2,131.23

Finding the Fourth Proportional to 8,705.05, 13,057.61 and 2,131.23

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Solution

The fourth proportional to 8,705.05, 13,057.61 and 2,131.23 is: 3,196.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.05 : 13,057.61 = 2,131.23 : x
  2. Step 2: Convert to fraction form
    8,705.05/13,057.61 = 2,131.23/x
  3. Step 3: Cross multiply
    8,705.05x = 13,057.61 × 2,131.23
  4. Step 4: Simplify right side
    8,705.05x = 27,828,808.47
  5. Step 5: Solve for x
    x = 27,828,808.47/8,705.05
  6. Step 6: Final answer
    x = 3,196.86

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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.