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Finding the Fourth Proportional to 4,786.02, 7,144.80 and 4,163.40

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Solution

The fourth proportional to 4,786.02, 7,144.80 and 4,163.40 is: 6,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.02 : 7,144.80 = 4,163.40 : x
  2. Step 2: Convert to fraction form
    4,786.02/7,144.80 = 4,163.40/x
  3. Step 3: Cross multiply
    4,786.02x = 7,144.80 × 4,163.40
  4. Step 4: Simplify right side
    4,786.02x = 29,746,660.32
  5. Step 5: Solve for x
    x = 29,746,660.32/4,786.02
  6. Step 6: Final answer
    x = 6,215.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.