Home / 7,429.20-11,136.60-3,040.80

Finding the Fourth Proportional to 7,429.20, 11,136.60 and 3,040.80

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Solution

The fourth proportional to 7,429.20, 11,136.60 and 3,040.80 is: 4,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,429.20 : 11,136.60 = 3,040.80 : x
  2. Step 2: Convert to fraction form
    7,429.20/11,136.60 = 3,040.80/x
  3. Step 3: Cross multiply
    7,429.20x = 11,136.60 × 3,040.80
  4. Step 4: Simplify right side
    7,429.20x = 33,864,173.28
  5. Step 5: Solve for x
    x = 33,864,173.28/7,429.20
  6. Step 6: Final answer
    x = 4,558.25

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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.