Home / 2,121.36-3,181.80-888.96

Finding the Fourth Proportional to 2,121.36, 3,181.80 and 888.96

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Solution

The fourth proportional to 2,121.36, 3,181.80 and 888.96 is: 1,333.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.36 : 3,181.80 = 888.96 : x
  2. Step 2: Convert to fraction form
    2,121.36/3,181.80 = 888.96/x
  3. Step 3: Cross multiply
    2,121.36x = 3,181.80 × 888.96
  4. Step 4: Simplify right side
    2,121.36x = 2,828,492.93
  5. Step 5: Solve for x
    x = 2,828,492.93/2,121.36
  6. Step 6: Final answer
    x = 1,333.34

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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.