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Finding the Fourth Proportional to 7,762.32, 11,646.21 and 3,379.20

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Solution

The fourth proportional to 7,762.32, 11,646.21 and 3,379.20 is: 5,069.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,762.32 : 11,646.21 = 3,379.20 : x
  2. Step 2: Convert to fraction form
    7,762.32/11,646.21 = 3,379.20/x
  3. Step 3: Cross multiply
    7,762.32x = 11,646.21 × 3,379.20
  4. Step 4: Simplify right side
    7,762.32x = 39,354,872.83
  5. Step 5: Solve for x
    x = 39,354,872.83/7,762.32
  6. Step 6: Final answer
    x = 5,069.99

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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.