Home / 2,686.86-4,026.39-1,908.39

Finding the Fourth Proportional to 2,686.86, 4,026.39 and 1,908.39

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Solution

The fourth proportional to 2,686.86, 4,026.39 and 1,908.39 is: 2,859.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.86 : 4,026.39 = 1,908.39 : x
  2. Step 2: Convert to fraction form
    2,686.86/4,026.39 = 1,908.39/x
  3. Step 3: Cross multiply
    2,686.86x = 4,026.39 × 1,908.39
  4. Step 4: Simplify right side
    2,686.86x = 7,683,922.41
  5. Step 5: Solve for x
    x = 7,683,922.41/2,686.86
  6. Step 6: Final answer
    x = 2,859.81

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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.