Home / 3,247.90-4,872.15-1,299.70

Finding the Fourth Proportional to 3,247.90, 4,872.15 and 1,299.70

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Solution

The fourth proportional to 3,247.90, 4,872.15 and 1,299.70 is: 1,949.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.90 : 4,872.15 = 1,299.70 : x
  2. Step 2: Convert to fraction form
    3,247.90/4,872.15 = 1,299.70/x
  3. Step 3: Cross multiply
    3,247.90x = 4,872.15 × 1,299.70
  4. Step 4: Simplify right side
    3,247.90x = 6,332,333.36
  5. Step 5: Solve for x
    x = 6,332,333.36/3,247.90
  6. Step 6: Final answer
    x = 1,949.67

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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.