Home / 3,387.21-4,674.12-1,894.87

Finding the Fourth Proportional to 3,387.21, 4,674.12 and 1,894.87

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Solution

The fourth proportional to 3,387.21, 4,674.12 and 1,894.87 is: 2,614.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.21 : 4,674.12 = 1,894.87 : x
  2. Step 2: Convert to fraction form
    3,387.21/4,674.12 = 1,894.87/x
  3. Step 3: Cross multiply
    3,387.21x = 4,674.12 × 1,894.87
  4. Step 4: Simplify right side
    3,387.21x = 8,856,832.87
  5. Step 5: Solve for x
    x = 8,856,832.87/3,387.21
  6. Step 6: Final answer
    x = 2,614.79

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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.