Home / 2,415.21-3,620.07-1,665.25

Finding the Fourth Proportional to 2,415.21, 3,620.07 and 1,665.25

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Solution

The fourth proportional to 2,415.21, 3,620.07 and 1,665.25 is: 2,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.21 : 3,620.07 = 1,665.25 : x
  2. Step 2: Convert to fraction form
    2,415.21/3,620.07 = 1,665.25/x
  3. Step 3: Cross multiply
    2,415.21x = 3,620.07 × 1,665.25
  4. Step 4: Simplify right side
    2,415.21x = 6,028,321.57
  5. Step 5: Solve for x
    x = 6,028,321.57/2,415.21
  6. Step 6: Final answer
    x = 2,495.98

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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.