Home / 3,911.89-5,396.73-2,495.20

Finding the Fourth Proportional to 3,911.89, 5,396.73 and 2,495.20

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Solution

The fourth proportional to 3,911.89, 5,396.73 and 2,495.20 is: 3,442.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.89 : 5,396.73 = 2,495.20 : x
  2. Step 2: Convert to fraction form
    3,911.89/5,396.73 = 2,495.20/x
  3. Step 3: Cross multiply
    3,911.89x = 5,396.73 × 2,495.20
  4. Step 4: Simplify right side
    3,911.89x = 13,465,920.70
  5. Step 5: Solve for x
    x = 13,465,920.70/3,911.89
  6. Step 6: Final answer
    x = 3,442.31

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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.