Home / 2,028.24-2,780.70-1,991.34

Finding the Fourth Proportional to 2,028.24, 2,780.70 and 1,991.34

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Solution

The fourth proportional to 2,028.24, 2,780.70 and 1,991.34 is: 2,730.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.24 : 2,780.70 = 1,991.34 : x
  2. Step 2: Convert to fraction form
    2,028.24/2,780.70 = 1,991.34/x
  3. Step 3: Cross multiply
    2,028.24x = 2,780.70 × 1,991.34
  4. Step 4: Simplify right side
    2,028.24x = 5,537,319.14
  5. Step 5: Solve for x
    x = 5,537,319.14/2,028.24
  6. Step 6: Final answer
    x = 2,730.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.