Home / 5,175.21-7,141.79-2,817.35

Finding the Fourth Proportional to 5,175.21, 7,141.79 and 2,817.35

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Solution

The fourth proportional to 5,175.21, 7,141.79 and 2,817.35 is: 3,887.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.21 : 7,141.79 = 2,817.35 : x
  2. Step 2: Convert to fraction form
    5,175.21/7,141.79 = 2,817.35/x
  3. Step 3: Cross multiply
    5,175.21x = 7,141.79 × 2,817.35
  4. Step 4: Simplify right side
    5,175.21x = 20,120,940.26
  5. Step 5: Solve for x
    x = 20,120,940.26/5,175.21
  6. Step 6: Final answer
    x = 3,887.95

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1.5x scale

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.