Home / 2,830.50-3,905.92-1,571.47

Finding the Fourth Proportional to 2,830.50, 3,905.92 and 1,571.47

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Solution

The fourth proportional to 2,830.50, 3,905.92 and 1,571.47 is: 2,168.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.50 : 3,905.92 = 1,571.47 : x
  2. Step 2: Convert to fraction form
    2,830.50/3,905.92 = 1,571.47/x
  3. Step 3: Cross multiply
    2,830.50x = 3,905.92 × 1,571.47
  4. Step 4: Simplify right side
    2,830.50x = 6,138,028.30
  5. Step 5: Solve for x
    x = 6,138,028.30/2,830.50
  6. Step 6: Final answer
    x = 2,168.53

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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.