Home / 3,078.45-4,615.26-1,434.78

Finding the Fourth Proportional to 3,078.45, 4,615.26 and 1,434.78

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Solution

The fourth proportional to 3,078.45, 4,615.26 and 1,434.78 is: 2,151.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.45 : 4,615.26 = 1,434.78 : x
  2. Step 2: Convert to fraction form
    3,078.45/4,615.26 = 1,434.78/x
  3. Step 3: Cross multiply
    3,078.45x = 4,615.26 × 1,434.78
  4. Step 4: Simplify right side
    3,078.45x = 6,621,882.74
  5. Step 5: Solve for x
    x = 6,621,882.74/3,078.45
  6. Step 6: Final answer
    x = 2,151.04

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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.