Home / 5,427.19-8,129.99-2,645.75

Finding the Fourth Proportional to 5,427.19, 8,129.99 and 2,645.75

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Solution

The fourth proportional to 5,427.19, 8,129.99 and 2,645.75 is: 3,963.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.19 : 8,129.99 = 2,645.75 : x
  2. Step 2: Convert to fraction form
    5,427.19/8,129.99 = 2,645.75/x
  3. Step 3: Cross multiply
    5,427.19x = 8,129.99 × 2,645.75
  4. Step 4: Simplify right side
    5,427.19x = 21,509,880.39
  5. Step 5: Solve for x
    x = 21,509,880.39/5,427.19
  6. Step 6: Final answer
    x = 3,963.36

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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.