Home / 1,563.38-2,157.44-900.27

Finding the Fourth Proportional to 1,563.38, 2,157.44 and 900.27

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Solution

The fourth proportional to 1,563.38, 2,157.44 and 900.27 is: 1,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.38 : 2,157.44 = 900.27 : x
  2. Step 2: Convert to fraction form
    1,563.38/2,157.44 = 900.27/x
  3. Step 3: Cross multiply
    1,563.38x = 2,157.44 × 900.27
  4. Step 4: Simplify right side
    1,563.38x = 1,942,278.51
  5. Step 5: Solve for x
    x = 1,942,278.51/1,563.38
  6. Step 6: Final answer
    x = 1,242.36

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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.