Home / 3,830.06-5,285.39-2,151.65

Finding the Fourth Proportional to 3,830.06, 5,285.39 and 2,151.65

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Solution

The fourth proportional to 3,830.06, 5,285.39 and 2,151.65 is: 2,969.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.06 : 5,285.39 = 2,151.65 : x
  2. Step 2: Convert to fraction form
    3,830.06/5,285.39 = 2,151.65/x
  3. Step 3: Cross multiply
    3,830.06x = 5,285.39 × 2,151.65
  4. Step 4: Simplify right side
    3,830.06x = 11,372,311.85
  5. Step 5: Solve for x
    x = 11,372,311.85/3,830.06
  6. Step 6: Final answer
    x = 2,969.22

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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.