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Finding the Fourth Proportional to 5,164.56, 7,163.64 and 4,987.54

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Solution

The fourth proportional to 5,164.56, 7,163.64 and 4,987.54 is: 6,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.56 : 7,163.64 = 4,987.54 : x
  2. Step 2: Convert to fraction form
    5,164.56/7,163.64 = 4,987.54/x
  3. Step 3: Cross multiply
    5,164.56x = 7,163.64 × 4,987.54
  4. Step 4: Simplify right side
    5,164.56x = 35,728,950.00
  5. Step 5: Solve for x
    x = 35,728,950.00/5,164.56
  6. Step 6: Final answer
    x = 6,918.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.