Home / 2,190.80-3,022.67-1,351.64

Finding the Fourth Proportional to 2,190.80, 3,022.67 and 1,351.64

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Solution

The fourth proportional to 2,190.80, 3,022.67 and 1,351.64 is: 1,864.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.80 : 3,022.67 = 1,351.64 : x
  2. Step 2: Convert to fraction form
    2,190.80/3,022.67 = 1,351.64/x
  3. Step 3: Cross multiply
    2,190.80x = 3,022.67 × 1,351.64
  4. Step 4: Simplify right side
    2,190.80x = 4,085,539.81
  5. Step 5: Solve for x
    x = 4,085,539.81/2,190.80
  6. Step 6: Final answer
    x = 1,864.87

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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.