Home / 2,190.68-3,023.12-1,351.05

Finding the Fourth Proportional to 2,190.68, 3,023.12 and 1,351.05

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Solution

The fourth proportional to 2,190.68, 3,023.12 and 1,351.05 is: 1,864.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.68 : 3,023.12 = 1,351.05 : x
  2. Step 2: Convert to fraction form
    2,190.68/3,023.12 = 1,351.05/x
  3. Step 3: Cross multiply
    2,190.68x = 3,023.12 × 1,351.05
  4. Step 4: Simplify right side
    2,190.68x = 4,084,378.29
  5. Step 5: Solve for x
    x = 4,084,378.29/2,190.68
  6. Step 6: Final answer
    x = 1,864.43

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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.