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Finding the Fourth Proportional to 2,906.32, 4,012.74 and 1,788.70

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Solution

The fourth proportional to 2,906.32, 4,012.74 and 1,788.70 is: 2,469.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906.32 : 4,012.74 = 1,788.70 : x
  2. Step 2: Convert to fraction form
    2,906.32/4,012.74 = 1,788.70/x
  3. Step 3: Cross multiply
    2,906.32x = 4,012.74 × 1,788.70
  4. Step 4: Simplify right side
    2,906.32x = 7,177,588.04
  5. Step 5: Solve for x
    x = 7,177,588.04/2,906.32
  6. Step 6: Final answer
    x = 2,469.65

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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.