Home / 2,609.40-3,912.36-1,439.96

Finding the Fourth Proportional to 2,609.40, 3,912.36 and 1,439.96

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Solution

The fourth proportional to 2,609.40, 3,912.36 and 1,439.96 is: 2,158.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.40 : 3,912.36 = 1,439.96 : x
  2. Step 2: Convert to fraction form
    2,609.40/3,912.36 = 1,439.96/x
  3. Step 3: Cross multiply
    2,609.40x = 3,912.36 × 1,439.96
  4. Step 4: Simplify right side
    2,609.40x = 5,633,632.12
  5. Step 5: Solve for x
    x = 5,633,632.12/2,609.40
  6. Step 6: Final answer
    x = 2,158.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.