Home / 7,811.12-11,714.85-3,647.18

Finding the Fourth Proportional to 7,811.12, 11,714.85 and 3,647.18

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Solution

The fourth proportional to 7,811.12, 11,714.85 and 3,647.18 is: 5,469.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.12 : 11,714.85 = 3,647.18 : x
  2. Step 2: Convert to fraction form
    7,811.12/11,714.85 = 3,647.18/x
  3. Step 3: Cross multiply
    7,811.12x = 11,714.85 × 3,647.18
  4. Step 4: Simplify right side
    7,811.12x = 42,726,108.05
  5. Step 5: Solve for x
    x = 42,726,108.05/7,811.12
  6. Step 6: Final answer
    x = 5,469.91

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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.