Home / 1,705.10-2,561.58-1,212.75

Finding the Fourth Proportional to 1,705.10, 2,561.58 and 1,212.75

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Solution

The fourth proportional to 1,705.10, 2,561.58 and 1,212.75 is: 1,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.10 : 2,561.58 = 1,212.75 : x
  2. Step 2: Convert to fraction form
    1,705.10/2,561.58 = 1,212.75/x
  3. Step 3: Cross multiply
    1,705.10x = 2,561.58 × 1,212.75
  4. Step 4: Simplify right side
    1,705.10x = 3,106,556.15
  5. Step 5: Solve for x
    x = 3,106,556.15/1,705.10
  6. Step 6: Final answer
    x = 1,821.93

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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.