Home / 5,179.36-7,147.52-2,821.50

Finding the Fourth Proportional to 5,179.36, 7,147.52 and 2,821.50

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Solution

The fourth proportional to 5,179.36, 7,147.52 and 2,821.50 is: 3,893.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.36 : 7,147.52 = 2,821.50 : x
  2. Step 2: Convert to fraction form
    5,179.36/7,147.52 = 2,821.50/x
  3. Step 3: Cross multiply
    5,179.36x = 7,147.52 × 2,821.50
  4. Step 4: Simplify right side
    5,179.36x = 20,166,713.57
  5. Step 5: Solve for x
    x = 20,166,713.57/5,179.36
  6. Step 6: Final answer
    x = 3,893.67

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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.