Home / 3,948.22-5,455.09-3,115.26

Finding the Fourth Proportional to 3,948.22, 5,455.09 and 3,115.26

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Solution

The fourth proportional to 3,948.22, 5,455.09 and 3,115.26 is: 4,304.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.22 : 5,455.09 = 3,115.26 : x
  2. Step 2: Convert to fraction form
    3,948.22/5,455.09 = 3,115.26/x
  3. Step 3: Cross multiply
    3,948.22x = 5,455.09 × 3,115.26
  4. Step 4: Simplify right side
    3,948.22x = 16,994,023.67
  5. Step 5: Solve for x
    x = 16,994,023.67/3,948.22
  6. Step 6: Final answer
    x = 4,304.22

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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.