Home / 7,021.57-9,688.83-4,189.27

Finding the Fourth Proportional to 7,021.57, 9,688.83 and 4,189.27

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Solution

The fourth proportional to 7,021.57, 9,688.83 and 4,189.27 is: 5,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.57 : 9,688.83 = 4,189.27 : x
  2. Step 2: Convert to fraction form
    7,021.57/9,688.83 = 4,189.27/x
  3. Step 3: Cross multiply
    7,021.57x = 9,688.83 × 4,189.27
  4. Step 4: Simplify right side
    7,021.57x = 40,589,135.33
  5. Step 5: Solve for x
    x = 40,589,135.33/7,021.57
  6. Step 6: Final answer
    x = 5,780.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.