Home / 2,190.09-3,278.79-1,703.55

Finding the Fourth Proportional to 2,190.09, 3,278.79 and 1,703.55

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Solution

The fourth proportional to 2,190.09, 3,278.79 and 1,703.55 is: 2,550.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.09 : 3,278.79 = 1,703.55 : x
  2. Step 2: Convert to fraction form
    2,190.09/3,278.79 = 1,703.55/x
  3. Step 3: Cross multiply
    2,190.09x = 3,278.79 × 1,703.55
  4. Step 4: Simplify right side
    2,190.09x = 5,585,582.70
  5. Step 5: Solve for x
    x = 5,585,582.70/2,190.09
  6. Step 6: Final answer
    x = 2,550.39

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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.