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Finding the Fourth Proportional to 2,328, 3,212.78 and 1,333.60

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Solution

The fourth proportional to 2,328, 3,212.78 and 1,333.60 is: 1,840.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328 : 3,212.78 = 1,333.60 : x
  2. Step 2: Convert to fraction form
    2,328/3,212.78 = 1,333.60/x
  3. Step 3: Cross multiply
    2,328x = 3,212.78 × 1,333.60
  4. Step 4: Simplify right side
    2,328x = 4,284,563.41
  5. Step 5: Solve for x
    x = 4,284,563.41/2,328
  6. Step 6: Final answer
    x = 1,840.45

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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.