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Finding the Fourth Proportional to 3,561.70, 5,340.48 and 1,711.99

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Solution

The fourth proportional to 3,561.70, 5,340.48 and 1,711.99 is: 2,566.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.70 : 5,340.48 = 1,711.99 : x
  2. Step 2: Convert to fraction form
    3,561.70/5,340.48 = 1,711.99/x
  3. Step 3: Cross multiply
    3,561.70x = 5,340.48 × 1,711.99
  4. Step 4: Simplify right side
    3,561.70x = 9,142,848.36
  5. Step 5: Solve for x
    x = 9,142,848.36/3,561.70
  6. Step 6: Final answer
    x = 2,566.99

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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.