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Finding the Fourth Proportional to 3,630.66, 5,445.26 and 1,779.94

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Solution

The fourth proportional to 3,630.66, 5,445.26 and 1,779.94 is: 2,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.66 : 5,445.26 = 1,779.94 : x
  2. Step 2: Convert to fraction form
    3,630.66/5,445.26 = 1,779.94/x
  3. Step 3: Cross multiply
    3,630.66x = 5,445.26 × 1,779.94
  4. Step 4: Simplify right side
    3,630.66x = 9,692,236.08
  5. Step 5: Solve for x
    x = 9,692,236.08/3,630.66
  6. Step 6: Final answer
    x = 2,669.55

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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.