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Finding the Fourth Proportional to 4,638.79, 6,945.63 and 3,396.79

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Solution

The fourth proportional to 4,638.79, 6,945.63 and 3,396.79 is: 5,085.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,638.79 : 6,945.63 = 3,396.79 : x
  2. Step 2: Convert to fraction form
    4,638.79/6,945.63 = 3,396.79/x
  3. Step 3: Cross multiply
    4,638.79x = 6,945.63 × 3,396.79
  4. Step 4: Simplify right side
    4,638.79x = 23,592,846.53
  5. Step 5: Solve for x
    x = 23,592,846.53/4,638.79
  6. Step 6: Final answer
    x = 5,085.99

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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.