Home / 2,425.90-3,636.39-1,328.02

Finding the Fourth Proportional to 2,425.90, 3,636.39 and 1,328.02

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Solution

The fourth proportional to 2,425.90, 3,636.39 and 1,328.02 is: 1,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,425.90 : 3,636.39 = 1,328.02 : x
  2. Step 2: Convert to fraction form
    2,425.90/3,636.39 = 1,328.02/x
  3. Step 3: Cross multiply
    2,425.90x = 3,636.39 × 1,328.02
  4. Step 4: Simplify right side
    2,425.90x = 4,829,198.65
  5. Step 5: Solve for x
    x = 4,829,198.65/2,425.90
  6. Step 6: Final answer
    x = 1,990.68

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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.