Home / 3,416.66-5,121.57-1,333.80

Finding the Fourth Proportional to 3,416.66, 5,121.57 and 1,333.80

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Solution

The fourth proportional to 3,416.66, 5,121.57 and 1,333.80 is: 1,999.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,416.66 : 5,121.57 = 1,333.80 : x
  2. Step 2: Convert to fraction form
    3,416.66/5,121.57 = 1,333.80/x
  3. Step 3: Cross multiply
    3,416.66x = 5,121.57 × 1,333.80
  4. Step 4: Simplify right side
    3,416.66x = 6,831,117.79
  5. Step 5: Solve for x
    x = 6,831,117.79/3,416.66
  6. Step 6: Final answer
    x = 1,999.36

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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.