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Finding the Fourth Proportional to 3,711.70, 5,579.70 and 2,623.60

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Solution

The fourth proportional to 3,711.70, 5,579.70 and 2,623.60 is: 3,943.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.70 : 5,579.70 = 2,623.60 : x
  2. Step 2: Convert to fraction form
    3,711.70/5,579.70 = 2,623.60/x
  3. Step 3: Cross multiply
    3,711.70x = 5,579.70 × 2,623.60
  4. Step 4: Simplify right side
    3,711.70x = 14,638,900.92
  5. Step 5: Solve for x
    x = 14,638,900.92/3,711.70
  6. Step 6: Final answer
    x = 3,943.99

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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.