Home / 3,913.26-5,400.48-2,145

Finding the Fourth Proportional to 3,913.26, 5,400.48 and 2,145

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Solution

The fourth proportional to 3,913.26, 5,400.48 and 2,145 is: 2,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.26 : 5,400.48 = 2,145 : x
  2. Step 2: Convert to fraction form
    3,913.26/5,400.48 = 2,145/x
  3. Step 3: Cross multiply
    3,913.26x = 5,400.48 × 2,145
  4. Step 4: Simplify right side
    3,913.26x = 11,584,029.60
  5. Step 5: Solve for x
    x = 11,584,029.60/3,913.26
  6. Step 6: Final answer
    x = 2,960.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.