Home / 3,140.97-4,333.12-2,021.51

Finding the Fourth Proportional to 3,140.97, 4,333.12 and 2,021.51

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Solution

The fourth proportional to 3,140.97, 4,333.12 and 2,021.51 is: 2,788.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.97 : 4,333.12 = 2,021.51 : x
  2. Step 2: Convert to fraction form
    3,140.97/4,333.12 = 2,021.51/x
  3. Step 3: Cross multiply
    3,140.97x = 4,333.12 × 2,021.51
  4. Step 4: Simplify right side
    3,140.97x = 8,759,418.69
  5. Step 5: Solve for x
    x = 8,759,418.69/3,140.97
  6. Step 6: Final answer
    x = 2,788.76

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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.