Home / 3,418.99-4,718.67-1,927.21

Finding the Fourth Proportional to 3,418.99, 4,718.67 and 1,927.21

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Solution

The fourth proportional to 3,418.99, 4,718.67 and 1,927.21 is: 2,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.99 : 4,718.67 = 1,927.21 : x
  2. Step 2: Convert to fraction form
    3,418.99/4,718.67 = 1,927.21/x
  3. Step 3: Cross multiply
    3,418.99x = 4,718.67 × 1,927.21
  4. Step 4: Simplify right side
    3,418.99x = 9,093,868.01
  5. Step 5: Solve for x
    x = 9,093,868.01/3,418.99
  6. Step 6: Final answer
    x = 2,659.81

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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.