Home / 3,820.14-5,271.78-2,141.57

Finding the Fourth Proportional to 3,820.14, 5,271.78 and 2,141.57

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Solution

The fourth proportional to 3,820.14, 5,271.78 and 2,141.57 is: 2,955.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.14 : 5,271.78 = 2,141.57 : x
  2. Step 2: Convert to fraction form
    3,820.14/5,271.78 = 2,141.57/x
  3. Step 3: Cross multiply
    3,820.14x = 5,271.78 × 2,141.57
  4. Step 4: Simplify right side
    3,820.14x = 11,289,859.54
  5. Step 5: Solve for x
    x = 11,289,859.54/3,820.14
  6. Step 6: Final answer
    x = 2,955.35

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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.