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Finding the Fourth Proportional to 7,762, 11,643.39 and 2,216.17

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Solution

The fourth proportional to 7,762, 11,643.39 and 2,216.17 is: 3,324.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,762 : 11,643.39 = 2,216.17 : x
  2. Step 2: Convert to fraction form
    7,762/11,643.39 = 2,216.17/x
  3. Step 3: Cross multiply
    7,762x = 11,643.39 × 2,216.17
  4. Step 4: Simplify right side
    7,762x = 25,803,662.32
  5. Step 5: Solve for x
    x = 25,803,662.32/7,762
  6. Step 6: Final answer
    x = 3,324.36

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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.