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Finding the Fourth Proportional to 7,762.52, 11,642.01 and 2,215.71

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Solution

The fourth proportional to 7,762.52, 11,642.01 and 2,215.71 is: 3,323.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,762.52 : 11,642.01 = 2,215.71 : x
  2. Step 2: Convert to fraction form
    7,762.52/11,642.01 = 2,215.71/x
  3. Step 3: Cross multiply
    7,762.52x = 11,642.01 × 2,215.71
  4. Step 4: Simplify right side
    7,762.52x = 25,795,317.98
  5. Step 5: Solve for x
    x = 25,795,317.98/7,762.52
  6. Step 6: Final answer
    x = 3,323.06

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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.