Home / 3,139.07-4,331.46-2,021.52

Finding the Fourth Proportional to 3,139.07, 4,331.46 and 2,021.52

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Solution

The fourth proportional to 3,139.07, 4,331.46 and 2,021.52 is: 2,789.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.07 : 4,331.46 = 2,021.52 : x
  2. Step 2: Convert to fraction form
    3,139.07/4,331.46 = 2,021.52/x
  3. Step 3: Cross multiply
    3,139.07x = 4,331.46 × 2,021.52
  4. Step 4: Simplify right side
    3,139.07x = 8,756,112.08
  5. Step 5: Solve for x
    x = 8,756,112.08/3,139.07
  6. Step 6: Final answer
    x = 2,789.40

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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.