Home / 1,550.20-2,140.98-1,028.44

Finding the Fourth Proportional to 1,550.20, 2,140.98 and 1,028.44

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Solution

The fourth proportional to 1,550.20, 2,140.98 and 1,028.44 is: 1,420.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.20 : 2,140.98 = 1,028.44 : x
  2. Step 2: Convert to fraction form
    1,550.20/2,140.98 = 1,028.44/x
  3. Step 3: Cross multiply
    1,550.20x = 2,140.98 × 1,028.44
  4. Step 4: Simplify right side
    1,550.20x = 2,201,869.47
  5. Step 5: Solve for x
    x = 2,201,869.47/1,550.20
  6. Step 6: Final answer
    x = 1,420.38

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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.