Home / 7,629.84-11,439-4,165.20

Finding the Fourth Proportional to 7,629.84, 11,439 and 4,165.20

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Solution

The fourth proportional to 7,629.84, 11,439 and 4,165.20 is: 6,244.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,629.84 : 11,439 = 4,165.20 : x
  2. Step 2: Convert to fraction form
    7,629.84/11,439 = 4,165.20/x
  3. Step 3: Cross multiply
    7,629.84x = 11,439 × 4,165.20
  4. Step 4: Simplify right side
    7,629.84x = 47,645,722.80
  5. Step 5: Solve for x
    x = 47,645,722.80/7,629.84
  6. Step 6: Final answer
    x = 6,244.66

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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.