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Finding the Fourth Proportional to 4,372.90, 6,555.90 and 2,180.50

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Solution

The fourth proportional to 4,372.90, 6,555.90 and 2,180.50 is: 3,269.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,372.90 : 6,555.90 = 2,180.50 : x
  2. Step 2: Convert to fraction form
    4,372.90/6,555.90 = 2,180.50/x
  3. Step 3: Cross multiply
    4,372.90x = 6,555.90 × 2,180.50
  4. Step 4: Simplify right side
    4,372.90x = 14,295,139.95
  5. Step 5: Solve for x
    x = 14,295,139.95/4,372.90
  6. Step 6: Final answer
    x = 3,269.03

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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.