Home / 2,125.40-3,188.10-1,469.30

Finding the Fourth Proportional to 2,125.40, 3,188.10 and 1,469.30

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Solution

The fourth proportional to 2,125.40, 3,188.10 and 1,469.30 is: 2,203.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.40 : 3,188.10 = 1,469.30 : x
  2. Step 2: Convert to fraction form
    2,125.40/3,188.10 = 1,469.30/x
  3. Step 3: Cross multiply
    2,125.40x = 3,188.10 × 1,469.30
  4. Step 4: Simplify right side
    2,125.40x = 4,684,275.33
  5. Step 5: Solve for x
    x = 4,684,275.33/2,125.40
  6. Step 6: Final answer
    x = 2,203.95

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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.