Home / 2,911.80-4,367.58-1,268.28

Finding the Fourth Proportional to 2,911.80, 4,367.58 and 1,268.28

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Solution

The fourth proportional to 2,911.80, 4,367.58 and 1,268.28 is: 1,902.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.80 : 4,367.58 = 1,268.28 : x
  2. Step 2: Convert to fraction form
    2,911.80/4,367.58 = 1,268.28/x
  3. Step 3: Cross multiply
    2,911.80x = 4,367.58 × 1,268.28
  4. Step 4: Simplify right side
    2,911.80x = 5,539,314.36
  5. Step 5: Solve for x
    x = 5,539,314.36/2,911.80
  6. Step 6: Final answer
    x = 1,902.37

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1.5x scale

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.