Home / 5,620.94-8,431.81-2,158.19

Finding the Fourth Proportional to 5,620.94, 8,431.81 and 2,158.19

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Solution

The fourth proportional to 5,620.94, 8,431.81 and 2,158.19 is: 3,237.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.94 : 8,431.81 = 2,158.19 : x
  2. Step 2: Convert to fraction form
    5,620.94/8,431.81 = 2,158.19/x
  3. Step 3: Cross multiply
    5,620.94x = 8,431.81 × 2,158.19
  4. Step 4: Simplify right side
    5,620.94x = 18,197,448.02
  5. Step 5: Solve for x
    x = 18,197,448.02/5,620.94
  6. Step 6: Final answer
    x = 3,237.44

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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.