Home / 3,895.12-5,370.42-3,390.22

Finding the Fourth Proportional to 3,895.12, 5,370.42 and 3,390.22

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Solution

The fourth proportional to 3,895.12, 5,370.42 and 3,390.22 is: 4,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.12 : 5,370.42 = 3,390.22 : x
  2. Step 2: Convert to fraction form
    3,895.12/5,370.42 = 3,390.22/x
  3. Step 3: Cross multiply
    3,895.12x = 5,370.42 × 3,390.22
  4. Step 4: Simplify right side
    3,895.12x = 18,206,905.29
  5. Step 5: Solve for x
    x = 18,206,905.29/3,895.12
  6. Step 6: Final answer
    x = 4,674.29

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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.