Home / 3,819.86-5,271.60-2,141.36

Finding the Fourth Proportional to 3,819.86, 5,271.60 and 2,141.36

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Solution

The fourth proportional to 3,819.86, 5,271.60 and 2,141.36 is: 2,955.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.86 : 5,271.60 = 2,141.36 : x
  2. Step 2: Convert to fraction form
    3,819.86/5,271.60 = 2,141.36/x
  3. Step 3: Cross multiply
    3,819.86x = 5,271.60 × 2,141.36
  4. Step 4: Simplify right side
    3,819.86x = 11,288,393.38
  5. Step 5: Solve for x
    x = 11,288,393.38/3,819.86
  6. Step 6: Final answer
    x = 2,955.19

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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.