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Finding the Fourth Proportional to 3,614.58, 5,419.80 and 1,664.34

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Solution

The fourth proportional to 3,614.58, 5,419.80 and 1,664.34 is: 2,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,614.58 : 5,419.80 = 1,664.34 : x
  2. Step 2: Convert to fraction form
    3,614.58/5,419.80 = 1,664.34/x
  3. Step 3: Cross multiply
    3,614.58x = 5,419.80 × 1,664.34
  4. Step 4: Simplify right side
    3,614.58x = 9,020,389.93
  5. Step 5: Solve for x
    x = 9,020,389.93/3,614.58
  6. Step 6: Final answer
    x = 2,495.56

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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.