Home / 3,208.20-4,423.20-2,631.17

Finding the Fourth Proportional to 3,208.20, 4,423.20 and 2,631.17

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Solution

The fourth proportional to 3,208.20, 4,423.20 and 2,631.17 is: 3,627.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.20 : 4,423.20 = 2,631.17 : x
  2. Step 2: Convert to fraction form
    3,208.20/4,423.20 = 2,631.17/x
  3. Step 3: Cross multiply
    3,208.20x = 4,423.20 × 2,631.17
  4. Step 4: Simplify right side
    3,208.20x = 11,638,191.14
  5. Step 5: Solve for x
    x = 11,638,191.14/3,208.20
  6. Step 6: Final answer
    x = 3,627.64

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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.