Home / 9,138.96-13,706.19-3,515.49

Finding the Fourth Proportional to 9,138.96, 13,706.19 and 3,515.49

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Solution

The fourth proportional to 9,138.96, 13,706.19 and 3,515.49 is: 5,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.96 : 13,706.19 = 3,515.49 : x
  2. Step 2: Convert to fraction form
    9,138.96/13,706.19 = 3,515.49/x
  3. Step 3: Cross multiply
    9,138.96x = 13,706.19 × 3,515.49
  4. Step 4: Simplify right side
    9,138.96x = 48,183,973.88
  5. Step 5: Solve for x
    x = 48,183,973.88/9,138.96
  6. Step 6: Final answer
    x = 5,272.37

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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.