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Finding the Fourth Proportional to 3,994.48, 5,991.86 and 1,220.93

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Solution

The fourth proportional to 3,994.48, 5,991.86 and 1,220.93 is: 1,831.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.48 : 5,991.86 = 1,220.93 : x
  2. Step 2: Convert to fraction form
    3,994.48/5,991.86 = 1,220.93/x
  3. Step 3: Cross multiply
    3,994.48x = 5,991.86 × 1,220.93
  4. Step 4: Simplify right side
    3,994.48x = 7,315,641.63
  5. Step 5: Solve for x
    x = 7,315,641.63/3,994.48
  6. Step 6: Final answer
    x = 1,831.44

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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.