Home / 5,705.10-8,556.79-1,809

Finding the Fourth Proportional to 5,705.10, 8,556.79 and 1,809

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Solution

The fourth proportional to 5,705.10, 8,556.79 and 1,809 is: 2,713.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705.10 : 8,556.79 = 1,809 : x
  2. Step 2: Convert to fraction form
    5,705.10/8,556.79 = 1,809/x
  3. Step 3: Cross multiply
    5,705.10x = 8,556.79 × 1,809
  4. Step 4: Simplify right side
    5,705.10x = 15,479,233.11
  5. Step 5: Solve for x
    x = 15,479,233.11/5,705.10
  6. Step 6: Final answer
    x = 2,713.23

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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.