Home / 5,168.42-7,128.23-3,175.41

Finding the Fourth Proportional to 5,168.42, 7,128.23 and 3,175.41

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Solution

The fourth proportional to 5,168.42, 7,128.23 and 3,175.41 is: 4,379.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.42 : 7,128.23 = 3,175.41 : x
  2. Step 2: Convert to fraction form
    5,168.42/7,128.23 = 3,175.41/x
  3. Step 3: Cross multiply
    5,168.42x = 7,128.23 × 3,175.41
  4. Step 4: Simplify right side
    5,168.42x = 22,635,036.95
  5. Step 5: Solve for x
    x = 22,635,036.95/5,168.42
  6. Step 6: Final answer
    x = 4,379.49

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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.