Home / 2,125.77-3,189.16-1,028.85

Finding the Fourth Proportional to 2,125.77, 3,189.16 and 1,028.85

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Solution

The fourth proportional to 2,125.77, 3,189.16 and 1,028.85 is: 1,543.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.77 : 3,189.16 = 1,028.85 : x
  2. Step 2: Convert to fraction form
    2,125.77/3,189.16 = 1,028.85/x
  3. Step 3: Cross multiply
    2,125.77x = 3,189.16 × 1,028.85
  4. Step 4: Simplify right side
    2,125.77x = 3,281,177.43
  5. Step 5: Solve for x
    x = 3,281,177.43/2,125.77
  6. Step 6: Final answer
    x = 1,543.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.