Home / 3,912.57-5,405.40-3,281.99

Finding the Fourth Proportional to 3,912.57, 5,405.40 and 3,281.99

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Solution

The fourth proportional to 3,912.57, 5,405.40 and 3,281.99 is: 4,534.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.57 : 5,405.40 = 3,281.99 : x
  2. Step 2: Convert to fraction form
    3,912.57/5,405.40 = 3,281.99/x
  3. Step 3: Cross multiply
    3,912.57x = 5,405.40 × 3,281.99
  4. Step 4: Simplify right side
    3,912.57x = 17,740,441.72
  5. Step 5: Solve for x
    x = 17,740,441.72/3,912.57
  6. Step 6: Final answer
    x = 4,534.22

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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.