Home / 1,563.11-2,157.21-933.83

Finding the Fourth Proportional to 1,563.11, 2,157.21 and 933.83

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Solution

The fourth proportional to 1,563.11, 2,157.21 and 933.83 is: 1,288.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.11 : 2,157.21 = 933.83 : x
  2. Step 2: Convert to fraction form
    1,563.11/2,157.21 = 933.83/x
  3. Step 3: Cross multiply
    1,563.11x = 2,157.21 × 933.83
  4. Step 4: Simplify right side
    1,563.11x = 2,014,456.63
  5. Step 5: Solve for x
    x = 2,014,456.63/1,563.11
  6. Step 6: Final answer
    x = 1,288.75

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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.