Home / 3,830.37-5,285.91-2,151.93

Finding the Fourth Proportional to 3,830.37, 5,285.91 and 2,151.93

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Solution

The fourth proportional to 3,830.37, 5,285.91 and 2,151.93 is: 2,969.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.37 : 5,285.91 = 2,151.93 : x
  2. Step 2: Convert to fraction form
    3,830.37/5,285.91 = 2,151.93/x
  3. Step 3: Cross multiply
    3,830.37x = 5,285.91 × 2,151.93
  4. Step 4: Simplify right side
    3,830.37x = 11,374,908.31
  5. Step 5: Solve for x
    x = 11,374,908.31/3,830.37
  6. Step 6: Final answer
    x = 2,969.66

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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.