Home / 5,145.37-7,721.13-2,223.67

Finding the Fourth Proportional to 5,145.37, 7,721.13 and 2,223.67

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Solution

The fourth proportional to 5,145.37, 7,721.13 and 2,223.67 is: 3,336.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.37 : 7,721.13 = 2,223.67 : x
  2. Step 2: Convert to fraction form
    5,145.37/7,721.13 = 2,223.67/x
  3. Step 3: Cross multiply
    5,145.37x = 7,721.13 × 2,223.67
  4. Step 4: Simplify right side
    5,145.37x = 17,169,245.15
  5. Step 5: Solve for x
    x = 17,169,245.15/5,145.37
  6. Step 6: Final answer
    x = 3,336.83

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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.