Home / 3,900.09-5,382.24-2,408.07

Finding the Fourth Proportional to 3,900.09, 5,382.24 and 2,408.07

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Solution

The fourth proportional to 3,900.09, 5,382.24 and 2,408.07 is: 3,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.09 : 5,382.24 = 2,408.07 : x
  2. Step 2: Convert to fraction form
    3,900.09/5,382.24 = 2,408.07/x
  3. Step 3: Cross multiply
    3,900.09x = 5,382.24 × 2,408.07
  4. Step 4: Simplify right side
    3,900.09x = 12,960,810.68
  5. Step 5: Solve for x
    x = 12,960,810.68/3,900.09
  6. Step 6: Final answer
    x = 3,323.21

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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.