Home / 1,739.95-2,611.20-1,278.97

Finding the Fourth Proportional to 1,739.95, 2,611.20 and 1,278.97

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Solution

The fourth proportional to 1,739.95, 2,611.20 and 1,278.97 is: 1,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,739.95 : 2,611.20 = 1,278.97 : x
  2. Step 2: Convert to fraction form
    1,739.95/2,611.20 = 1,278.97/x
  3. Step 3: Cross multiply
    1,739.95x = 2,611.20 × 1,278.97
  4. Step 4: Simplify right side
    1,739.95x = 3,339,639.94
  5. Step 5: Solve for x
    x = 3,339,639.94/1,739.95
  6. Step 6: Final answer
    x = 1,919.39

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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.