Home / 3,855.57-5,317.41-2,511.51

Finding the Fourth Proportional to 3,855.57, 5,317.41 and 2,511.51

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Solution

The fourth proportional to 3,855.57, 5,317.41 and 2,511.51 is: 3,463.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.57 : 5,317.41 = 2,511.51 : x
  2. Step 2: Convert to fraction form
    3,855.57/5,317.41 = 2,511.51/x
  3. Step 3: Cross multiply
    3,855.57x = 5,317.41 × 2,511.51
  4. Step 4: Simplify right side
    3,855.57x = 13,354,728.39
  5. Step 5: Solve for x
    x = 13,354,728.39/3,855.57
  6. Step 6: Final answer
    x = 3,463.75

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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.