Home / 3,615.80-4,989.78-2,043.89

Finding the Fourth Proportional to 3,615.80, 4,989.78 and 2,043.89

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Solution

The fourth proportional to 3,615.80, 4,989.78 and 2,043.89 is: 2,820.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.80 : 4,989.78 = 2,043.89 : x
  2. Step 2: Convert to fraction form
    3,615.80/4,989.78 = 2,043.89/x
  3. Step 3: Cross multiply
    3,615.80x = 4,989.78 × 2,043.89
  4. Step 4: Simplify right side
    3,615.80x = 10,198,561.44
  5. Step 5: Solve for x
    x = 10,198,561.44/3,615.80
  6. Step 6: Final answer
    x = 2,820.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.