Home / 2,183.28-3,011.49-1,398.30

Finding the Fourth Proportional to 2,183.28, 3,011.49 and 1,398.30

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Solution

The fourth proportional to 2,183.28, 3,011.49 and 1,398.30 is: 1,928.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.28 : 3,011.49 = 1,398.30 : x
  2. Step 2: Convert to fraction form
    2,183.28/3,011.49 = 1,398.30/x
  3. Step 3: Cross multiply
    2,183.28x = 3,011.49 × 1,398.30
  4. Step 4: Simplify right side
    2,183.28x = 4,210,966.47
  5. Step 5: Solve for x
    x = 4,210,966.47/2,183.28
  6. Step 6: Final answer
    x = 1,928.73

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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.