Home / 8,111.81-12,169.88-2,565.26

Finding the Fourth Proportional to 8,111.81, 12,169.88 and 2,565.26

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Solution

The fourth proportional to 8,111.81, 12,169.88 and 2,565.26 is: 3,848.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.81 : 12,169.88 = 2,565.26 : x
  2. Step 2: Convert to fraction form
    8,111.81/12,169.88 = 2,565.26/x
  3. Step 3: Cross multiply
    8,111.81x = 12,169.88 × 2,565.26
  4. Step 4: Simplify right side
    8,111.81x = 31,218,906.37
  5. Step 5: Solve for x
    x = 31,218,906.37/8,111.81
  6. Step 6: Final answer
    x = 3,848.57

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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.