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Finding the Fourth Proportional to 3,149.77, 4,725.35 and 958.67

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Solution

The fourth proportional to 3,149.77, 4,725.35 and 958.67 is: 1,438.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.77 : 4,725.35 = 958.67 : x
  2. Step 2: Convert to fraction form
    3,149.77/4,725.35 = 958.67/x
  3. Step 3: Cross multiply
    3,149.77x = 4,725.35 × 958.67
  4. Step 4: Simplify right side
    3,149.77x = 4,530,049.57
  5. Step 5: Solve for x
    x = 4,530,049.57/3,149.77
  6. Step 6: Final answer
    x = 1,438.22

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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.