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Finding the Fourth Proportional to 7,200.78, 10,801.26 and 2,006.34

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Solution

The fourth proportional to 7,200.78, 10,801.26 and 2,006.34 is: 3,009.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.78 : 10,801.26 = 2,006.34 : x
  2. Step 2: Convert to fraction form
    7,200.78/10,801.26 = 2,006.34/x
  3. Step 3: Cross multiply
    7,200.78x = 10,801.26 × 2,006.34
  4. Step 4: Simplify right side
    7,200.78x = 21,670,999.99
  5. Step 5: Solve for x
    x = 21,670,999.99/7,200.78
  6. Step 6: Final answer
    x = 3,009.54

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1.5x scale

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.