Home / 5,121.86-7,676.40-2,196.77

Finding the Fourth Proportional to 5,121.86, 7,676.40 and 2,196.77

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Solution

The fourth proportional to 5,121.86, 7,676.40 and 2,196.77 is: 3,292.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.86 : 7,676.40 = 2,196.77 : x
  2. Step 2: Convert to fraction form
    5,121.86/7,676.40 = 2,196.77/x
  3. Step 3: Cross multiply
    5,121.86x = 7,676.40 × 2,196.77
  4. Step 4: Simplify right side
    5,121.86x = 16,863,285.23
  5. Step 5: Solve for x
    x = 16,863,285.23/5,121.86
  6. Step 6: Final answer
    x = 3,292.41

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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.