Home / 5,179-7,147.32-3,900.59

Finding the Fourth Proportional to 5,179, 7,147.32 and 3,900.59

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Solution

The fourth proportional to 5,179, 7,147.32 and 3,900.59 is: 5,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179 : 7,147.32 = 3,900.59 : x
  2. Step 2: Convert to fraction form
    5,179/7,147.32 = 3,900.59/x
  3. Step 3: Cross multiply
    5,179x = 7,147.32 × 3,900.59
  4. Step 4: Simplify right side
    5,179x = 27,878,764.92
  5. Step 5: Solve for x
    x = 27,878,764.92/5,179
  6. Step 6: Final answer
    x = 5,383.04

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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.