Home / 5,389.12-8,083.68-2,313.28

Finding the Fourth Proportional to 5,389.12, 8,083.68 and 2,313.28

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Solution

The fourth proportional to 5,389.12, 8,083.68 and 2,313.28 is: 3,469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.12 : 8,083.68 = 2,313.28 : x
  2. Step 2: Convert to fraction form
    5,389.12/8,083.68 = 2,313.28/x
  3. Step 3: Cross multiply
    5,389.12x = 8,083.68 × 2,313.28
  4. Step 4: Simplify right side
    5,389.12x = 18,699,815.27
  5. Step 5: Solve for x
    x = 18,699,815.27/5,389.12
  6. Step 6: Final answer
    x = 3,469.92

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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.