Home / 2,125.03-3,188.45-1,199.20

Finding the Fourth Proportional to 2,125.03, 3,188.45 and 1,199.20

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Solution

The fourth proportional to 2,125.03, 3,188.45 and 1,199.20 is: 1,799.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.03 : 3,188.45 = 1,199.20 : x
  2. Step 2: Convert to fraction form
    2,125.03/3,188.45 = 1,199.20/x
  3. Step 3: Cross multiply
    2,125.03x = 3,188.45 × 1,199.20
  4. Step 4: Simplify right side
    2,125.03x = 3,823,589.24
  5. Step 5: Solve for x
    x = 3,823,589.24/2,125.03
  6. Step 6: Final answer
    x = 1,799.31

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1.5x scale

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.