Home / 3,615.05-4,988.20-2,021.57

Finding the Fourth Proportional to 3,615.05, 4,988.20 and 2,021.57

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Solution

The fourth proportional to 3,615.05, 4,988.20 and 2,021.57 is: 2,789.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.05 : 4,988.20 = 2,021.57 : x
  2. Step 2: Convert to fraction form
    3,615.05/4,988.20 = 2,021.57/x
  3. Step 3: Cross multiply
    3,615.05x = 4,988.20 × 2,021.57
  4. Step 4: Simplify right side
    3,615.05x = 10,084,016.03
  5. Step 5: Solve for x
    x = 10,084,016.03/3,615.05
  6. Step 6: Final answer
    x = 2,789.46

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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.