Home / 1,943.91-2,682.99-1,280.79

Finding the Fourth Proportional to 1,943.91, 2,682.99 and 1,280.79

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Solution

The fourth proportional to 1,943.91, 2,682.99 and 1,280.79 is: 1,767.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.91 : 2,682.99 = 1,280.79 : x
  2. Step 2: Convert to fraction form
    1,943.91/2,682.99 = 1,280.79/x
  3. Step 3: Cross multiply
    1,943.91x = 2,682.99 × 1,280.79
  4. Step 4: Simplify right side
    1,943.91x = 3,436,346.76
  5. Step 5: Solve for x
    x = 3,436,346.76/1,943.91
  6. Step 6: Final answer
    x = 1,767.75

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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.