Home / 5,375.12-7,418.76-3,136.64

Finding the Fourth Proportional to 5,375.12, 7,418.76 and 3,136.64

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Solution

The fourth proportional to 5,375.12, 7,418.76 and 3,136.64 is: 4,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,375.12 : 7,418.76 = 3,136.64 : x
  2. Step 2: Convert to fraction form
    5,375.12/7,418.76 = 3,136.64/x
  3. Step 3: Cross multiply
    5,375.12x = 7,418.76 × 3,136.64
  4. Step 4: Simplify right side
    5,375.12x = 23,269,979.37
  5. Step 5: Solve for x
    x = 23,269,979.37/5,375.12
  6. Step 6: Final answer
    x = 4,329.20

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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.