Home / 5,629.46-7,767.78-3,271.20

Finding the Fourth Proportional to 5,629.46, 7,767.78 and 3,271.20

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Solution

The fourth proportional to 5,629.46, 7,767.78 and 3,271.20 is: 4,513.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629.46 : 7,767.78 = 3,271.20 : x
  2. Step 2: Convert to fraction form
    5,629.46/7,767.78 = 3,271.20/x
  3. Step 3: Cross multiply
    5,629.46x = 7,767.78 × 3,271.20
  4. Step 4: Simplify right side
    5,629.46x = 25,409,961.94
  5. Step 5: Solve for x
    x = 25,409,961.94/5,629.46
  6. Step 6: Final answer
    x = 4,513.75

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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.