Home / 8,685.36-13,020.31-3,137.47

Finding the Fourth Proportional to 8,685.36, 13,020.31 and 3,137.47

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Solution

The fourth proportional to 8,685.36, 13,020.31 and 3,137.47 is: 4,703.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.36 : 13,020.31 = 3,137.47 : x
  2. Step 2: Convert to fraction form
    8,685.36/13,020.31 = 3,137.47/x
  3. Step 3: Cross multiply
    8,685.36x = 13,020.31 × 3,137.47
  4. Step 4: Simplify right side
    8,685.36x = 40,850,791.62
  5. Step 5: Solve for x
    x = 40,850,791.62/8,685.36
  6. Step 6: Final answer
    x = 4,703.41

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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.