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Finding the Fourth Proportional to 2,394, 3,591.36 and 855.36

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Solution

The fourth proportional to 2,394, 3,591.36 and 855.36 is: 1,283.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,394 : 3,591.36 = 855.36 : x
  2. Step 2: Convert to fraction form
    2,394/3,591.36 = 855.36/x
  3. Step 3: Cross multiply
    2,394x = 3,591.36 × 855.36
  4. Step 4: Simplify right side
    2,394x = 3,071,905.69
  5. Step 5: Solve for x
    x = 3,071,905.69/2,394
  6. Step 6: Final answer
    x = 1,283.17

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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.