Home / 3,819.80-5,261.64-2,698.76

Finding the Fourth Proportional to 3,819.80, 5,261.64 and 2,698.76

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Solution

The fourth proportional to 3,819.80, 5,261.64 and 2,698.76 is: 3,717.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.80 : 5,261.64 = 2,698.76 : x
  2. Step 2: Convert to fraction form
    3,819.80/5,261.64 = 2,698.76/x
  3. Step 3: Cross multiply
    3,819.80x = 5,261.64 × 2,698.76
  4. Step 4: Simplify right side
    3,819.80x = 14,199,903.57
  5. Step 5: Solve for x
    x = 14,199,903.57/3,819.80
  6. Step 6: Final answer
    x = 3,717.45

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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.