Home / 3,878.30-5,351.72-2,199.17

Finding the Fourth Proportional to 3,878.30, 5,351.72 and 2,199.17

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Solution

The fourth proportional to 3,878.30, 5,351.72 and 2,199.17 is: 3,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.30 : 5,351.72 = 2,199.17 : x
  2. Step 2: Convert to fraction form
    3,878.30/5,351.72 = 2,199.17/x
  3. Step 3: Cross multiply
    3,878.30x = 5,351.72 × 2,199.17
  4. Step 4: Simplify right side
    3,878.30x = 11,769,334.19
  5. Step 5: Solve for x
    x = 11,769,334.19/3,878.30
  6. Step 6: Final answer
    x = 3,034.67

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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.