Home / 1,581.11-2,183.64-1,231.25

Finding the Fourth Proportional to 1,581.11, 2,183.64 and 1,231.25

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Solution

The fourth proportional to 1,581.11, 2,183.64 and 1,231.25 is: 1,700.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.11 : 2,183.64 = 1,231.25 : x
  2. Step 2: Convert to fraction form
    1,581.11/2,183.64 = 1,231.25/x
  3. Step 3: Cross multiply
    1,581.11x = 2,183.64 × 1,231.25
  4. Step 4: Simplify right side
    1,581.11x = 2,688,606.75
  5. Step 5: Solve for x
    x = 2,688,606.75/1,581.11
  6. Step 6: Final answer
    x = 1,700.46

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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.