Home / 5,147.68-7,104-3,157.60

Finding the Fourth Proportional to 5,147.68, 7,104 and 3,157.60

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Solution

The fourth proportional to 5,147.68, 7,104 and 3,157.60 is: 4,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.68 : 7,104 = 3,157.60 : x
  2. Step 2: Convert to fraction form
    5,147.68/7,104 = 3,157.60/x
  3. Step 3: Cross multiply
    5,147.68x = 7,104 × 3,157.60
  4. Step 4: Simplify right side
    5,147.68x = 22,431,590.40
  5. Step 5: Solve for x
    x = 22,431,590.40/5,147.68
  6. Step 6: Final answer
    x = 4,357.61

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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.