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Finding the Fourth Proportional to 2,209.01, 3,312.29 and 822.08

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Solution

The fourth proportional to 2,209.01, 3,312.29 and 822.08 is: 1,232.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.01 : 3,312.29 = 822.08 : x
  2. Step 2: Convert to fraction form
    2,209.01/3,312.29 = 822.08/x
  3. Step 3: Cross multiply
    2,209.01x = 3,312.29 × 822.08
  4. Step 4: Simplify right side
    2,209.01x = 2,722,977.70
  5. Step 5: Solve for x
    x = 2,722,977.70/2,209.01
  6. Step 6: Final answer
    x = 1,232.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.