Home / 1,418.21-1,958.09-887.30

Finding the Fourth Proportional to 1,418.21, 1,958.09 and 887.30

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Solution

The fourth proportional to 1,418.21, 1,958.09 and 887.30 is: 1,225.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.21 : 1,958.09 = 887.30 : x
  2. Step 2: Convert to fraction form
    1,418.21/1,958.09 = 887.30/x
  3. Step 3: Cross multiply
    1,418.21x = 1,958.09 × 887.30
  4. Step 4: Simplify right side
    1,418.21x = 1,737,399.03
  5. Step 5: Solve for x
    x = 1,737,399.03/1,418.21
  6. Step 6: Final answer
    x = 1,225.07

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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.