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Finding the Fourth Proportional to 2,806.84, 4,230.56 and 2,648.08

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Solution

The fourth proportional to 2,806.84, 4,230.56 and 2,648.08 is: 3,991.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.84 : 4,230.56 = 2,648.08 : x
  2. Step 2: Convert to fraction form
    2,806.84/4,230.56 = 2,648.08/x
  3. Step 3: Cross multiply
    2,806.84x = 4,230.56 × 2,648.08
  4. Step 4: Simplify right side
    2,806.84x = 11,202,861.32
  5. Step 5: Solve for x
    x = 11,202,861.32/2,806.84
  6. Step 6: Final answer
    x = 3,991.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.