Home / 3,209.26-4,430.82-2,621.20

Finding the Fourth Proportional to 3,209.26, 4,430.82 and 2,621.20

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Solution

The fourth proportional to 3,209.26, 4,430.82 and 2,621.20 is: 3,618.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.26 : 4,430.82 = 2,621.20 : x
  2. Step 2: Convert to fraction form
    3,209.26/4,430.82 = 2,621.20/x
  3. Step 3: Cross multiply
    3,209.26x = 4,430.82 × 2,621.20
  4. Step 4: Simplify right side
    3,209.26x = 11,614,065.38
  5. Step 5: Solve for x
    x = 11,614,065.38/3,209.26
  6. Step 6: Final answer
    x = 3,618.92

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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.