Home / 8,270.48-11,406.60-5,120.72

Finding the Fourth Proportional to 8,270.48, 11,406.60 and 5,120.72

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Solution

The fourth proportional to 8,270.48, 11,406.60 and 5,120.72 is: 7,062.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.48 : 11,406.60 = 5,120.72 : x
  2. Step 2: Convert to fraction form
    8,270.48/11,406.60 = 5,120.72/x
  3. Step 3: Cross multiply
    8,270.48x = 11,406.60 × 5,120.72
  4. Step 4: Simplify right side
    8,270.48x = 58,410,004.75
  5. Step 5: Solve for x
    x = 58,410,004.75/8,270.48
  6. Step 6: Final answer
    x = 7,062.47

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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.