Home / 8,686.49-13,029.62-2,112.69

Finding the Fourth Proportional to 8,686.49, 13,029.62 and 2,112.69

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Solution

The fourth proportional to 8,686.49, 13,029.62 and 2,112.69 is: 3,169.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.49 : 13,029.62 = 2,112.69 : x
  2. Step 2: Convert to fraction form
    8,686.49/13,029.62 = 2,112.69/x
  3. Step 3: Cross multiply
    8,686.49x = 13,029.62 × 2,112.69
  4. Step 4: Simplify right side
    8,686.49x = 27,527,537.31
  5. Step 5: Solve for x
    x = 27,527,537.31/8,686.49
  6. Step 6: Final answer
    x = 3,169.00

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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.