Home / 3,738.80-5,157.96-2,166.32

Finding the Fourth Proportional to 3,738.80, 5,157.96 and 2,166.32

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Solution

The fourth proportional to 3,738.80, 5,157.96 and 2,166.32 is: 2,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.80 : 5,157.96 = 2,166.32 : x
  2. Step 2: Convert to fraction form
    3,738.80/5,157.96 = 2,166.32/x
  3. Step 3: Cross multiply
    3,738.80x = 5,157.96 × 2,166.32
  4. Step 4: Simplify right side
    3,738.80x = 11,173,791.91
  5. Step 5: Solve for x
    x = 11,173,791.91/3,738.80
  6. Step 6: Final answer
    x = 2,988.60

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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.