Home / 2,125.02-3,187.98-1,028.80

Finding the Fourth Proportional to 2,125.02, 3,187.98 and 1,028.80

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Solution

The fourth proportional to 2,125.02, 3,187.98 and 1,028.80 is: 1,543.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.02 : 3,187.98 = 1,028.80 : x
  2. Step 2: Convert to fraction form
    2,125.02/3,187.98 = 1,028.80/x
  3. Step 3: Cross multiply
    2,125.02x = 3,187.98 × 1,028.80
  4. Step 4: Simplify right side
    2,125.02x = 3,279,793.82
  5. Step 5: Solve for x
    x = 3,279,793.82/2,125.02
  6. Step 6: Final answer
    x = 1,543.42

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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.