Home / 3,157.18-4,351.94-2,160.73

Finding the Fourth Proportional to 3,157.18, 4,351.94 and 2,160.73

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Solution

The fourth proportional to 3,157.18, 4,351.94 and 2,160.73 is: 2,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.18 : 4,351.94 = 2,160.73 : x
  2. Step 2: Convert to fraction form
    3,157.18/4,351.94 = 2,160.73/x
  3. Step 3: Cross multiply
    3,157.18x = 4,351.94 × 2,160.73
  4. Step 4: Simplify right side
    3,157.18x = 9,403,357.73
  5. Step 5: Solve for x
    x = 9,403,357.73/3,157.18
  6. Step 6: Final answer
    x = 2,978.41

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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.