Home / 2,278.88-3,144.63-1,284.33

Finding the Fourth Proportional to 2,278.88, 3,144.63 and 1,284.33

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Solution

The fourth proportional to 2,278.88, 3,144.63 and 1,284.33 is: 1,772.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.88 : 3,144.63 = 1,284.33 : x
  2. Step 2: Convert to fraction form
    2,278.88/3,144.63 = 1,284.33/x
  3. Step 3: Cross multiply
    2,278.88x = 3,144.63 × 1,284.33
  4. Step 4: Simplify right side
    2,278.88x = 4,038,744.09
  5. Step 5: Solve for x
    x = 4,038,744.09/2,278.88
  6. Step 6: Final answer
    x = 1,772.25

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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.