Home / 2,609.40-3,915.20-1,376.52

Finding the Fourth Proportional to 2,609.40, 3,915.20 and 1,376.52

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Solution

The fourth proportional to 2,609.40, 3,915.20 and 1,376.52 is: 2,065.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.40 : 3,915.20 = 1,376.52 : x
  2. Step 2: Convert to fraction form
    2,609.40/3,915.20 = 1,376.52/x
  3. Step 3: Cross multiply
    2,609.40x = 3,915.20 × 1,376.52
  4. Step 4: Simplify right side
    2,609.40x = 5,389,351.10
  5. Step 5: Solve for x
    x = 5,389,351.10/2,609.40
  6. Step 6: Final answer
    x = 2,065.36

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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.