Home / 2,125.40-3,188.10-2,040.35

Finding the Fourth Proportional to 2,125.40, 3,188.10 and 2,040.35

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Solution

The fourth proportional to 2,125.40, 3,188.10 and 2,040.35 is: 3,060.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.40 : 3,188.10 = 2,040.35 : x
  2. Step 2: Convert to fraction form
    2,125.40/3,188.10 = 2,040.35/x
  3. Step 3: Cross multiply
    2,125.40x = 3,188.10 × 2,040.35
  4. Step 4: Simplify right side
    2,125.40x = 6,504,839.84
  5. Step 5: Solve for x
    x = 6,504,839.84/2,125.40
  6. Step 6: Final answer
    x = 3,060.53

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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.