Home / 2,125.21-3,188.15-1,084.65

Finding the Fourth Proportional to 2,125.21, 3,188.15 and 1,084.65

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Solution

The fourth proportional to 2,125.21, 3,188.15 and 1,084.65 is: 1,627.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.21 : 3,188.15 = 1,084.65 : x
  2. Step 2: Convert to fraction form
    2,125.21/3,188.15 = 1,084.65/x
  3. Step 3: Cross multiply
    2,125.21x = 3,188.15 × 1,084.65
  4. Step 4: Simplify right side
    2,125.21x = 3,458,026.90
  5. Step 5: Solve for x
    x = 3,458,026.90/2,125.21
  6. Step 6: Final answer
    x = 1,627.15

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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.