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Finding the Fourth Proportional to 9,814.80, 14,720.12 and 3,239.43

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Solution

The fourth proportional to 9,814.80, 14,720.12 and 3,239.43 is: 4,858.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,814.80 : 14,720.12 = 3,239.43 : x
  2. Step 2: Convert to fraction form
    9,814.80/14,720.12 = 3,239.43/x
  3. Step 3: Cross multiply
    9,814.80x = 14,720.12 × 3,239.43
  4. Step 4: Simplify right side
    9,814.80x = 47,684,798.33
  5. Step 5: Solve for x
    x = 47,684,798.33/9,814.80
  6. Step 6: Final answer
    x = 4,858.46

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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.