Home / 8,679.04-13,015.86-3,131.66

Finding the Fourth Proportional to 8,679.04, 13,015.86 and 3,131.66

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Solution

The fourth proportional to 8,679.04, 13,015.86 and 3,131.66 is: 4,696.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.04 : 13,015.86 = 3,131.66 : x
  2. Step 2: Convert to fraction form
    8,679.04/13,015.86 = 3,131.66/x
  3. Step 3: Cross multiply
    8,679.04x = 13,015.86 × 3,131.66
  4. Step 4: Simplify right side
    8,679.04x = 40,761,220.11
  5. Step 5: Solve for x
    x = 40,761,220.11/8,679.04
  6. Step 6: Final answer
    x = 4,696.51

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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.