Home / 3,382.16-4,667.21-1,889.78

Finding the Fourth Proportional to 3,382.16, 4,667.21 and 1,889.78

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Solution

The fourth proportional to 3,382.16, 4,667.21 and 1,889.78 is: 2,607.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,382.16 : 4,667.21 = 1,889.78 : x
  2. Step 2: Convert to fraction form
    3,382.16/4,667.21 = 1,889.78/x
  3. Step 3: Cross multiply
    3,382.16x = 4,667.21 × 1,889.78
  4. Step 4: Simplify right side
    3,382.16x = 8,820,012.86
  5. Step 5: Solve for x
    x = 8,820,012.86/3,382.16
  6. Step 6: Final answer
    x = 2,607.81

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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.