Home / 7,811.06-11,714.18-4,111.28

Finding the Fourth Proportional to 7,811.06, 11,714.18 and 4,111.28

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Solution

The fourth proportional to 7,811.06, 11,714.18 and 4,111.28 is: 6,165.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.06 : 11,714.18 = 4,111.28 : x
  2. Step 2: Convert to fraction form
    7,811.06/11,714.18 = 4,111.28/x
  3. Step 3: Cross multiply
    7,811.06x = 11,714.18 × 4,111.28
  4. Step 4: Simplify right side
    7,811.06x = 48,160,273.95
  5. Step 5: Solve for x
    x = 48,160,273.95/7,811.06
  6. Step 6: Final answer
    x = 6,165.65

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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.