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Finding the Fourth Proportional to 2,977.54, 4,466.61 and 786.43

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Solution

The fourth proportional to 2,977.54, 4,466.61 and 786.43 is: 1,179.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.54 : 4,466.61 = 786.43 : x
  2. Step 2: Convert to fraction form
    2,977.54/4,466.61 = 786.43/x
  3. Step 3: Cross multiply
    2,977.54x = 4,466.61 × 786.43
  4. Step 4: Simplify right side
    2,977.54x = 3,512,676.10
  5. Step 5: Solve for x
    x = 3,512,676.10/2,977.54
  6. Step 6: Final answer
    x = 1,179.72

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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.