Home / 8,120.44-11,212.62-5,289.16

Finding the Fourth Proportional to 8,120.44, 11,212.62 and 5,289.16

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Solution

The fourth proportional to 8,120.44, 11,212.62 and 5,289.16 is: 7,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.44 : 11,212.62 = 5,289.16 : x
  2. Step 2: Convert to fraction form
    8,120.44/11,212.62 = 5,289.16/x
  3. Step 3: Cross multiply
    8,120.44x = 11,212.62 × 5,289.16
  4. Step 4: Simplify right side
    8,120.44x = 59,305,341.20
  5. Step 5: Solve for x
    x = 59,305,341.20/8,120.44
  6. Step 6: Final answer
    x = 7,303.22

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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.