Home / 5,111.86-7,667.79-2,188.27

Finding the Fourth Proportional to 5,111.86, 7,667.79 and 2,188.27

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Solution

The fourth proportional to 5,111.86, 7,667.79 and 2,188.27 is: 3,282.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.86 : 7,667.79 = 2,188.27 : x
  2. Step 2: Convert to fraction form
    5,111.86/7,667.79 = 2,188.27/x
  3. Step 3: Cross multiply
    5,111.86x = 7,667.79 × 2,188.27
  4. Step 4: Simplify right side
    5,111.86x = 16,779,194.82
  5. Step 5: Solve for x
    x = 16,779,194.82/5,111.86
  6. Step 6: Final answer
    x = 3,282.41

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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.