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Finding the Fourth Proportional to 2,806.63, 4,209.02 and 1,325.62

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Solution

The fourth proportional to 2,806.63, 4,209.02 and 1,325.62 is: 1,987.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.63 : 4,209.02 = 1,325.62 : x
  2. Step 2: Convert to fraction form
    2,806.63/4,209.02 = 1,325.62/x
  3. Step 3: Cross multiply
    2,806.63x = 4,209.02 × 1,325.62
  4. Step 4: Simplify right side
    2,806.63x = 5,579,540.05
  5. Step 5: Solve for x
    x = 5,579,540.05/2,806.63
  6. Step 6: Final answer
    x = 1,987.99

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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.