Home / 2,157.93-3,221.85-1,922.83

Finding the Fourth Proportional to 2,157.93, 3,221.85 and 1,922.83

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Solution

The fourth proportional to 2,157.93, 3,221.85 and 1,922.83 is: 2,870.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.93 : 3,221.85 = 1,922.83 : x
  2. Step 2: Convert to fraction form
    2,157.93/3,221.85 = 1,922.83/x
  3. Step 3: Cross multiply
    2,157.93x = 3,221.85 × 1,922.83
  4. Step 4: Simplify right side
    2,157.93x = 6,195,069.84
  5. Step 5: Solve for x
    x = 6,195,069.84/2,157.93
  6. Step 6: Final answer
    x = 2,870.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.