Home / 2,351.80-3,245.55-1,289.62

Finding the Fourth Proportional to 2,351.80, 3,245.55 and 1,289.62

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Solution

The fourth proportional to 2,351.80, 3,245.55 and 1,289.62 is: 1,779.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.80 : 3,245.55 = 1,289.62 : x
  2. Step 2: Convert to fraction form
    2,351.80/3,245.55 = 1,289.62/x
  3. Step 3: Cross multiply
    2,351.80x = 3,245.55 × 1,289.62
  4. Step 4: Simplify right side
    2,351.80x = 4,185,526.19
  5. Step 5: Solve for x
    x = 4,185,526.19/2,351.80
  6. Step 6: Final answer
    x = 1,779.71

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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.