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Finding the Fourth Proportional to 1,806.11, 2,709.17 and 1,478.06

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Solution

The fourth proportional to 1,806.11, 2,709.17 and 1,478.06 is: 2,217.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.11 : 2,709.17 = 1,478.06 : x
  2. Step 2: Convert to fraction form
    1,806.11/2,709.17 = 1,478.06/x
  3. Step 3: Cross multiply
    1,806.11x = 2,709.17 × 1,478.06
  4. Step 4: Simplify right side
    1,806.11x = 4,004,294.87
  5. Step 5: Solve for x
    x = 4,004,294.87/1,806.11
  6. Step 6: Final answer
    x = 2,217.09

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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.