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Finding the Fourth Proportional to 2,977.43, 4,466.58 and 786.32

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Solution

The fourth proportional to 2,977.43, 4,466.58 and 786.32 is: 1,179.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.43 : 4,466.58 = 786.32 : x
  2. Step 2: Convert to fraction form
    2,977.43/4,466.58 = 786.32/x
  3. Step 3: Cross multiply
    2,977.43x = 4,466.58 × 786.32
  4. Step 4: Simplify right side
    2,977.43x = 3,512,138.85
  5. Step 5: Solve for x
    x = 3,512,138.85/2,977.43
  6. Step 6: Final answer
    x = 1,179.59

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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.