Home / 5,220.10-7,828.20-2,099.05

Finding the Fourth Proportional to 5,220.10, 7,828.20 and 2,099.05

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Solution

The fourth proportional to 5,220.10, 7,828.20 and 2,099.05 is: 3,147.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.10 : 7,828.20 = 2,099.05 : x
  2. Step 2: Convert to fraction form
    5,220.10/7,828.20 = 2,099.05/x
  3. Step 3: Cross multiply
    5,220.10x = 7,828.20 × 2,099.05
  4. Step 4: Simplify right side
    5,220.10x = 16,431,783.21
  5. Step 5: Solve for x
    x = 16,431,783.21/5,220.10
  6. Step 6: Final answer
    x = 3,147.79

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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.