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Finding the Fourth Proportional to 3,323.79, 4,986.54 and 1,243.95

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Solution

The fourth proportional to 3,323.79, 4,986.54 and 1,243.95 is: 1,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,323.79 : 4,986.54 = 1,243.95 : x
  2. Step 2: Convert to fraction form
    3,323.79/4,986.54 = 1,243.95/x
  3. Step 3: Cross multiply
    3,323.79x = 4,986.54 × 1,243.95
  4. Step 4: Simplify right side
    3,323.79x = 6,203,011.10
  5. Step 5: Solve for x
    x = 6,203,011.10/3,323.79
  6. Step 6: Final answer
    x = 1,866.25

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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.