Home / 3,994.23-5,989.53-1,221.24

Finding the Fourth Proportional to 3,994.23, 5,989.53 and 1,221.24

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Solution

The fourth proportional to 3,994.23, 5,989.53 and 1,221.24 is: 1,831.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.23 : 5,989.53 = 1,221.24 : x
  2. Step 2: Convert to fraction form
    3,994.23/5,989.53 = 1,221.24/x
  3. Step 3: Cross multiply
    3,994.23x = 5,989.53 × 1,221.24
  4. Step 4: Simplify right side
    3,994.23x = 7,314,653.62
  5. Step 5: Solve for x
    x = 7,314,653.62/3,994.23
  6. Step 6: Final answer
    x = 1,831.31

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Half scale
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Double scale
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Similar ratio
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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.