Home / 1,563.81-2,157.23-1,268.56

Finding the Fourth Proportional to 1,563.81, 2,157.23 and 1,268.56

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Solution

The fourth proportional to 1,563.81, 2,157.23 and 1,268.56 is: 1,749.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.81 : 2,157.23 = 1,268.56 : x
  2. Step 2: Convert to fraction form
    1,563.81/2,157.23 = 1,268.56/x
  3. Step 3: Cross multiply
    1,563.81x = 2,157.23 × 1,268.56
  4. Step 4: Simplify right side
    1,563.81x = 2,736,581.56
  5. Step 5: Solve for x
    x = 2,736,581.56/1,563.81
  6. Step 6: Final answer
    x = 1,749.95

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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.