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Finding the Fourth Proportional to 3,271.51, 4,515.51 and 2,209.60

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Solution

The fourth proportional to 3,271.51, 4,515.51 and 2,209.60 is: 3,049.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,271.51 : 4,515.51 = 2,209.60 : x
  2. Step 2: Convert to fraction form
    3,271.51/4,515.51 = 2,209.60/x
  3. Step 3: Cross multiply
    3,271.51x = 4,515.51 × 2,209.60
  4. Step 4: Simplify right side
    3,271.51x = 9,977,470.90
  5. Step 5: Solve for x
    x = 9,977,470.90/3,271.51
  6. Step 6: Final answer
    x = 3,049.81

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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.