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Finding the Fourth Proportional to 3,995.76, 5,991.16 and 3,480.60

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Solution

The fourth proportional to 3,995.76, 5,991.16 and 3,480.60 is: 5,218.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.76 : 5,991.16 = 3,480.60 : x
  2. Step 2: Convert to fraction form
    3,995.76/5,991.16 = 3,480.60/x
  3. Step 3: Cross multiply
    3,995.76x = 5,991.16 × 3,480.60
  4. Step 4: Simplify right side
    3,995.76x = 20,852,831.50
  5. Step 5: Solve for x
    x = 20,852,831.50/3,995.76
  6. Step 6: Final answer
    x = 5,218.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.