Home / 3,138.16-4,706.14-1,288.75

Finding the Fourth Proportional to 3,138.16, 4,706.14 and 1,288.75

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Solution

The fourth proportional to 3,138.16, 4,706.14 and 1,288.75 is: 1,932.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.16 : 4,706.14 = 1,288.75 : x
  2. Step 2: Convert to fraction form
    3,138.16/4,706.14 = 1,288.75/x
  3. Step 3: Cross multiply
    3,138.16x = 4,706.14 × 1,288.75
  4. Step 4: Simplify right side
    3,138.16x = 6,065,037.93
  5. Step 5: Solve for x
    x = 6,065,037.93/3,138.16
  6. Step 6: Final answer
    x = 1,932.67

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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.