Home / 1,394.36-2,091.70-469.60

Finding the Fourth Proportional to 1,394.36, 2,091.70 and 469.60

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Solution

The fourth proportional to 1,394.36, 2,091.70 and 469.60 is: 704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.36 : 2,091.70 = 469.60 : x
  2. Step 2: Convert to fraction form
    1,394.36/2,091.70 = 469.60/x
  3. Step 3: Cross multiply
    1,394.36x = 2,091.70 × 469.60
  4. Step 4: Simplify right side
    1,394.36x = 982,262.32
  5. Step 5: Solve for x
    x = 982,262.32/1,394.36
  6. Step 6: Final answer
    x = 704.45

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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.