Home / 2,609.46-3,915.78-1,438.96

Finding the Fourth Proportional to 2,609.46, 3,915.78 and 1,438.96

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Solution

The fourth proportional to 2,609.46, 3,915.78 and 1,438.96 is: 2,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.46 : 3,915.78 = 1,438.96 : x
  2. Step 2: Convert to fraction form
    2,609.46/3,915.78 = 1,438.96/x
  3. Step 3: Cross multiply
    2,609.46x = 3,915.78 × 1,438.96
  4. Step 4: Simplify right side
    2,609.46x = 5,634,661.08
  5. Step 5: Solve for x
    x = 5,634,661.08/2,609.46
  6. Step 6: Final answer
    x = 2,159.32

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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.