Home / 3,823.86-5,277.14-2,145.80

Finding the Fourth Proportional to 3,823.86, 5,277.14 and 2,145.80

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Solution

The fourth proportional to 3,823.86, 5,277.14 and 2,145.80 is: 2,961.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,823.86 : 5,277.14 = 2,145.80 : x
  2. Step 2: Convert to fraction form
    3,823.86/5,277.14 = 2,145.80/x
  3. Step 3: Cross multiply
    3,823.86x = 5,277.14 × 2,145.80
  4. Step 4: Simplify right side
    3,823.86x = 11,323,687.01
  5. Step 5: Solve for x
    x = 11,323,687.01/3,823.86
  6. Step 6: Final answer
    x = 2,961.32

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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.