Home / 8,686.29-13,029.34-2,112.47

Finding the Fourth Proportional to 8,686.29, 13,029.34 and 2,112.47

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Solution

The fourth proportional to 8,686.29, 13,029.34 and 2,112.47 is: 3,168.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.29 : 13,029.34 = 2,112.47 : x
  2. Step 2: Convert to fraction form
    8,686.29/13,029.34 = 2,112.47/x
  3. Step 3: Cross multiply
    8,686.29x = 13,029.34 × 2,112.47
  4. Step 4: Simplify right side
    8,686.29x = 27,524,089.87
  5. Step 5: Solve for x
    x = 27,524,089.87/8,686.29
  6. Step 6: Final answer
    x = 3,168.68

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1.5x scale

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.