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Finding the Fourth Proportional to 7,172.50, 10,759.16 and 2,555.50

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Solution

The fourth proportional to 7,172.50, 10,759.16 and 2,555.50 is: 3,833.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.50 : 10,759.16 = 2,555.50 : x
  2. Step 2: Convert to fraction form
    7,172.50/10,759.16 = 2,555.50/x
  3. Step 3: Cross multiply
    7,172.50x = 10,759.16 × 2,555.50
  4. Step 4: Simplify right side
    7,172.50x = 27,495,033.38
  5. Step 5: Solve for x
    x = 27,495,033.38/7,172.50
  6. Step 6: Final answer
    x = 3,833.40

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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.