Home / 3,449.19-5,174.80-1,989.39

Finding the Fourth Proportional to 3,449.19, 5,174.80 and 1,989.39

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Solution

The fourth proportional to 3,449.19, 5,174.80 and 1,989.39 is: 2,984.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,449.19 : 5,174.80 = 1,989.39 : x
  2. Step 2: Convert to fraction form
    3,449.19/5,174.80 = 1,989.39/x
  3. Step 3: Cross multiply
    3,449.19x = 5,174.80 × 1,989.39
  4. Step 4: Simplify right side
    3,449.19x = 10,294,695.37
  5. Step 5: Solve for x
    x = 10,294,695.37/3,449.19
  6. Step 6: Final answer
    x = 2,984.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.