Home / 2,351.57-3,245.09-1,289.36

Finding the Fourth Proportional to 2,351.57, 3,245.09 and 1,289.36

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Solution

The fourth proportional to 2,351.57, 3,245.09 and 1,289.36 is: 1,779.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.57 : 3,245.09 = 1,289.36 : x
  2. Step 2: Convert to fraction form
    2,351.57/3,245.09 = 1,289.36/x
  3. Step 3: Cross multiply
    2,351.57x = 3,245.09 × 1,289.36
  4. Step 4: Simplify right side
    2,351.57x = 4,184,066.57
  5. Step 5: Solve for x
    x = 4,184,066.57/2,351.57
  6. Step 6: Final answer
    x = 1,779.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.