Home / 2,615.20-3,917.34-1,965.04

Finding the Fourth Proportional to 2,615.20, 3,917.34 and 1,965.04

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Solution

The fourth proportional to 2,615.20, 3,917.34 and 1,965.04 is: 2,943.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.20 : 3,917.34 = 1,965.04 : x
  2. Step 2: Convert to fraction form
    2,615.20/3,917.34 = 1,965.04/x
  3. Step 3: Cross multiply
    2,615.20x = 3,917.34 × 1,965.04
  4. Step 4: Simplify right side
    2,615.20x = 7,697,729.79
  5. Step 5: Solve for x
    x = 7,697,729.79/2,615.20
  6. Step 6: Final answer
    x = 2,943.46

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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.