Home / 2,609.08-3,915.64-1,377.20

Finding the Fourth Proportional to 2,609.08, 3,915.64 and 1,377.20

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Solution

The fourth proportional to 2,609.08, 3,915.64 and 1,377.20 is: 2,066.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.08 : 3,915.64 = 1,377.20 : x
  2. Step 2: Convert to fraction form
    2,609.08/3,915.64 = 1,377.20/x
  3. Step 3: Cross multiply
    2,609.08x = 3,915.64 × 1,377.20
  4. Step 4: Simplify right side
    2,609.08x = 5,392,619.41
  5. Step 5: Solve for x
    x = 5,392,619.41/2,609.08
  6. Step 6: Final answer
    x = 2,066.87

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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.