Home / 4,889.30-6,745.58-3,121.93

Finding the Fourth Proportional to 4,889.30, 6,745.58 and 3,121.93

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Solution

The fourth proportional to 4,889.30, 6,745.58 and 3,121.93 is: 4,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.30 : 6,745.58 = 3,121.93 : x
  2. Step 2: Convert to fraction form
    4,889.30/6,745.58 = 3,121.93/x
  3. Step 3: Cross multiply
    4,889.30x = 6,745.58 × 3,121.93
  4. Step 4: Simplify right side
    4,889.30x = 21,059,194.84
  5. Step 5: Solve for x
    x = 21,059,194.84/4,889.30
  6. Step 6: Final answer
    x = 4,307.20

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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.