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Finding the Fourth Proportional to 3,600.80, 5,389.20 and 2,610.80

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Solution

The fourth proportional to 3,600.80, 5,389.20 and 2,610.80 is: 3,907.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.80 : 5,389.20 = 2,610.80 : x
  2. Step 2: Convert to fraction form
    3,600.80/5,389.20 = 2,610.80/x
  3. Step 3: Cross multiply
    3,600.80x = 5,389.20 × 2,610.80
  4. Step 4: Simplify right side
    3,600.80x = 14,070,123.36
  5. Step 5: Solve for x
    x = 14,070,123.36/3,600.80
  6. Step 6: Final answer
    x = 3,907.50

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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.