Home / 7,764.76-11,647.29-1,921.22

Finding the Fourth Proportional to 7,764.76, 11,647.29 and 1,921.22

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Solution

The fourth proportional to 7,764.76, 11,647.29 and 1,921.22 is: 2,881.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.76 : 11,647.29 = 1,921.22 : x
  2. Step 2: Convert to fraction form
    7,764.76/11,647.29 = 1,921.22/x
  3. Step 3: Cross multiply
    7,764.76x = 11,647.29 × 1,921.22
  4. Step 4: Simplify right side
    7,764.76x = 22,376,999.14
  5. Step 5: Solve for x
    x = 22,376,999.14/7,764.76
  6. Step 6: Final answer
    x = 2,881.87

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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.