Home / 1,394.20-2,090.14-1,087.41

Finding the Fourth Proportional to 1,394.20, 2,090.14 and 1,087.41

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Solution

The fourth proportional to 1,394.20, 2,090.14 and 1,087.41 is: 1,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.20 : 2,090.14 = 1,087.41 : x
  2. Step 2: Convert to fraction form
    1,394.20/2,090.14 = 1,087.41/x
  3. Step 3: Cross multiply
    1,394.20x = 2,090.14 × 1,087.41
  4. Step 4: Simplify right side
    1,394.20x = 2,272,850.37
  5. Step 5: Solve for x
    x = 2,272,850.37/1,394.20
  6. Step 6: Final answer
    x = 1,630.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.