Home / 5,775.21-7,969.78-3,122.61

Finding the Fourth Proportional to 5,775.21, 7,969.78 and 3,122.61

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Solution

The fourth proportional to 5,775.21, 7,969.78 and 3,122.61 is: 4,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,775.21 : 7,969.78 = 3,122.61 : x
  2. Step 2: Convert to fraction form
    5,775.21/7,969.78 = 3,122.61/x
  3. Step 3: Cross multiply
    5,775.21x = 7,969.78 × 3,122.61
  4. Step 4: Simplify right side
    5,775.21x = 24,886,514.73
  5. Step 5: Solve for x
    x = 24,886,514.73/5,775.21
  6. Step 6: Final answer
    x = 4,309.20

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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.