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Finding the Fourth Proportional to 2,246.56, 3,370.46 and 785.84

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Solution

The fourth proportional to 2,246.56, 3,370.46 and 785.84 is: 1,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,246.56 : 3,370.46 = 785.84 : x
  2. Step 2: Convert to fraction form
    2,246.56/3,370.46 = 785.84/x
  3. Step 3: Cross multiply
    2,246.56x = 3,370.46 × 785.84
  4. Step 4: Simplify right side
    2,246.56x = 2,648,621.50
  5. Step 5: Solve for x
    x = 2,648,621.50/2,246.56
  6. Step 6: Final answer
    x = 1,178.97

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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.