Home / 5,272.30-7,912.15-3,889.23

Finding the Fourth Proportional to 5,272.30, 7,912.15 and 3,889.23

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Solution

The fourth proportional to 5,272.30, 7,912.15 and 3,889.23 is: 5,836.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.30 : 7,912.15 = 3,889.23 : x
  2. Step 2: Convert to fraction form
    5,272.30/7,912.15 = 3,889.23/x
  3. Step 3: Cross multiply
    5,272.30x = 7,912.15 × 3,889.23
  4. Step 4: Simplify right side
    5,272.30x = 30,772,131.58
  5. Step 5: Solve for x
    x = 30,772,131.58/5,272.30
  6. Step 6: Final answer
    x = 5,836.57

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1.5x scale

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.