Home / 3,214.80-4,435.92-1,889.64

Finding the Fourth Proportional to 3,214.80, 4,435.92 and 1,889.64

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Solution

The fourth proportional to 3,214.80, 4,435.92 and 1,889.64 is: 2,607.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.80 : 4,435.92 = 1,889.64 : x
  2. Step 2: Convert to fraction form
    3,214.80/4,435.92 = 1,889.64/x
  3. Step 3: Cross multiply
    3,214.80x = 4,435.92 × 1,889.64
  4. Step 4: Simplify right side
    3,214.80x = 8,382,291.87
  5. Step 5: Solve for x
    x = 8,382,291.87/3,214.80
  6. Step 6: Final answer
    x = 2,607.41

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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.