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Finding the Fourth Proportional to 4,671.78, 6,447.21 and 2,682.69

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Solution

The fourth proportional to 4,671.78, 6,447.21 and 2,682.69 is: 3,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,671.78 : 6,447.21 = 2,682.69 : x
  2. Step 2: Convert to fraction form
    4,671.78/6,447.21 = 2,682.69/x
  3. Step 3: Cross multiply
    4,671.78x = 6,447.21 × 2,682.69
  4. Step 4: Simplify right side
    4,671.78x = 17,295,865.79
  5. Step 5: Solve for x
    x = 17,295,865.79/4,671.78
  6. Step 6: Final answer
    x = 3,702.20

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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.