Home / 2,830.38-3,905.74-1,571.44

Finding the Fourth Proportional to 2,830.38, 3,905.74 and 1,571.44

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Solution

The fourth proportional to 2,830.38, 3,905.74 and 1,571.44 is: 2,168.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.38 : 3,905.74 = 1,571.44 : x
  2. Step 2: Convert to fraction form
    2,830.38/3,905.74 = 1,571.44/x
  3. Step 3: Cross multiply
    2,830.38x = 3,905.74 × 1,571.44
  4. Step 4: Simplify right side
    2,830.38x = 6,137,622.37
  5. Step 5: Solve for x
    x = 6,137,622.37/2,830.38
  6. Step 6: Final answer
    x = 2,168.48

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1.5x scale

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.