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Finding the Fourth Proportional to 3,636.65, 5,455.76 and 1,445.33

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Solution

The fourth proportional to 3,636.65, 5,455.76 and 1,445.33 is: 2,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636.65 : 5,455.76 = 1,445.33 : x
  2. Step 2: Convert to fraction form
    3,636.65/5,455.76 = 1,445.33/x
  3. Step 3: Cross multiply
    3,636.65x = 5,455.76 × 1,445.33
  4. Step 4: Simplify right side
    3,636.65x = 7,885,339.10
  5. Step 5: Solve for x
    x = 7,885,339.10/3,636.65
  6. Step 6: Final answer
    x = 2,168.30

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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.