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Finding the Fourth Proportional to 2,430.44, 3,645.96 and 786.44

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Solution

The fourth proportional to 2,430.44, 3,645.96 and 786.44 is: 1,179.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.44 : 3,645.96 = 786.44 : x
  2. Step 2: Convert to fraction form
    2,430.44/3,645.96 = 786.44/x
  3. Step 3: Cross multiply
    2,430.44x = 3,645.96 × 786.44
  4. Step 4: Simplify right side
    2,430.44x = 2,867,328.78
  5. Step 5: Solve for x
    x = 2,867,328.78/2,430.44
  6. Step 6: Final answer
    x = 1,179.76

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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.