Home / 1,621.44-2,232.88-1,408.66

Finding the Fourth Proportional to 1,621.44, 2,232.88 and 1,408.66

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Solution

The fourth proportional to 1,621.44, 2,232.88 and 1,408.66 is: 1,939.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.44 : 2,232.88 = 1,408.66 : x
  2. Step 2: Convert to fraction form
    1,621.44/2,232.88 = 1,408.66/x
  3. Step 3: Cross multiply
    1,621.44x = 2,232.88 × 1,408.66
  4. Step 4: Simplify right side
    1,621.44x = 3,145,364.92
  5. Step 5: Solve for x
    x = 3,145,364.92/1,621.44
  6. Step 6: Final answer
    x = 1,939.86

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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.