Home / 6,619.88-9,135.60-3,636.00

Finding the Fourth Proportional to 6,619.88, 9,135.60 and 3,636.00

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Solution

The fourth proportional to 6,619.88, 9,135.60 and 3,636.00 is: 5,017.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.88 : 9,135.60 = 3,636.00 : x
  2. Step 2: Convert to fraction form
    6,619.88/9,135.60 = 3,636.00/x
  3. Step 3: Cross multiply
    6,619.88x = 9,135.60 × 3,636.00
  4. Step 4: Simplify right side
    6,619.88x = 33,217,020.98
  5. Step 5: Solve for x
    x = 33,217,020.98/6,619.88
  6. Step 6: Final answer
    x = 5,017.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.