Home / 2,839.84-4,260.94-1,278.77

Finding the Fourth Proportional to 2,839.84, 4,260.94 and 1,278.77

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Solution

The fourth proportional to 2,839.84, 4,260.94 and 1,278.77 is: 1,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.84 : 4,260.94 = 1,278.77 : x
  2. Step 2: Convert to fraction form
    2,839.84/4,260.94 = 1,278.77/x
  3. Step 3: Cross multiply
    2,839.84x = 4,260.94 × 1,278.77
  4. Step 4: Simplify right side
    2,839.84x = 5,448,737.74
  5. Step 5: Solve for x
    x = 5,448,737.74/2,839.84
  6. Step 6: Final answer
    x = 1,918.68

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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.