Home / 1,563.01-2,157.21-899.72

Finding the Fourth Proportional to 1,563.01, 2,157.21 and 899.72

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Solution

The fourth proportional to 1,563.01, 2,157.21 and 899.72 is: 1,241.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.01 : 2,157.21 = 899.72 : x
  2. Step 2: Convert to fraction form
    1,563.01/2,157.21 = 899.72/x
  3. Step 3: Cross multiply
    1,563.01x = 2,157.21 × 899.72
  4. Step 4: Simplify right side
    1,563.01x = 1,940,888.12
  5. Step 5: Solve for x
    x = 1,940,888.12/1,563.01
  6. Step 6: Final answer
    x = 1,241.76

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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.