Home / 3,971.21-5,479.34-2,555.37

Finding the Fourth Proportional to 3,971.21, 5,479.34 and 2,555.37

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Solution

The fourth proportional to 3,971.21, 5,479.34 and 2,555.37 is: 3,525.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.21 : 5,479.34 = 2,555.37 : x
  2. Step 2: Convert to fraction form
    3,971.21/5,479.34 = 2,555.37/x
  3. Step 3: Cross multiply
    3,971.21x = 5,479.34 × 2,555.37
  4. Step 4: Simplify right side
    3,971.21x = 14,001,728.28
  5. Step 5: Solve for x
    x = 14,001,728.28/3,971.21
  6. Step 6: Final answer
    x = 3,525.81

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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.