Home / 7,144.20-9,856.62-4,157.64

Finding the Fourth Proportional to 7,144.20, 9,856.62 and 4,157.64

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Solution

The fourth proportional to 7,144.20, 9,856.62 and 4,157.64 is: 5,736.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.20 : 9,856.62 = 4,157.64 : x
  2. Step 2: Convert to fraction form
    7,144.20/9,856.62 = 4,157.64/x
  3. Step 3: Cross multiply
    7,144.20x = 9,856.62 × 4,157.64
  4. Step 4: Simplify right side
    7,144.20x = 40,980,277.58
  5. Step 5: Solve for x
    x = 40,980,277.58/7,144.20
  6. Step 6: Final answer
    x = 5,736.16

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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.