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Finding the Fourth Proportional to 3,571.05, 5,354.55 and 1,620.84

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Solution

The fourth proportional to 3,571.05, 5,354.55 and 1,620.84 is: 2,430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.05 : 5,354.55 = 1,620.84 : x
  2. Step 2: Convert to fraction form
    3,571.05/5,354.55 = 1,620.84/x
  3. Step 3: Cross multiply
    3,571.05x = 5,354.55 × 1,620.84
  4. Step 4: Simplify right side
    3,571.05x = 8,678,868.82
  5. Step 5: Solve for x
    x = 8,678,868.82/3,571.05
  6. Step 6: Final answer
    x = 2,430.34

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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.