Home / 9,288.36-12,815.72-5,255.28

Finding the Fourth Proportional to 9,288.36, 12,815.72 and 5,255.28

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Solution

The fourth proportional to 9,288.36, 12,815.72 and 5,255.28 is: 7,251.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,288.36 : 12,815.72 = 5,255.28 : x
  2. Step 2: Convert to fraction form
    9,288.36/12,815.72 = 5,255.28/x
  3. Step 3: Cross multiply
    9,288.36x = 12,815.72 × 5,255.28
  4. Step 4: Simplify right side
    9,288.36x = 67,350,197.00
  5. Step 5: Solve for x
    x = 67,350,197.00/9,288.36
  6. Step 6: Final answer
    x = 7,251.03

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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.