Home / 2,028.12-2,798.76-1,143.90

Finding the Fourth Proportional to 2,028.12, 2,798.76 and 1,143.90

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Solution

The fourth proportional to 2,028.12, 2,798.76 and 1,143.90 is: 1,578.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.12 : 2,798.76 = 1,143.90 : x
  2. Step 2: Convert to fraction form
    2,028.12/2,798.76 = 1,143.90/x
  3. Step 3: Cross multiply
    2,028.12x = 2,798.76 × 1,143.90
  4. Step 4: Simplify right side
    2,028.12x = 3,201,501.56
  5. Step 5: Solve for x
    x = 3,201,501.56/2,028.12
  6. Step 6: Final answer
    x = 1,578.56

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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.