Home / 2,620.45-3,614.70-1,571.90

Finding the Fourth Proportional to 2,620.45, 3,614.70 and 1,571.90

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Solution

The fourth proportional to 2,620.45, 3,614.70 and 1,571.90 is: 2,168.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.45 : 3,614.70 = 1,571.90 : x
  2. Step 2: Convert to fraction form
    2,620.45/3,614.70 = 1,571.90/x
  3. Step 3: Cross multiply
    2,620.45x = 3,614.70 × 1,571.90
  4. Step 4: Simplify right side
    2,620.45x = 5,681,946.93
  5. Step 5: Solve for x
    x = 5,681,946.93/2,620.45
  6. Step 6: Final answer
    x = 2,168.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.