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Finding the Fourth Proportional to 6,427.76, 9,640.46 and 2,916.92

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Solution

The fourth proportional to 6,427.76, 9,640.46 and 2,916.92 is: 4,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,427.76 : 9,640.46 = 2,916.92 : x
  2. Step 2: Convert to fraction form
    6,427.76/9,640.46 = 2,916.92/x
  3. Step 3: Cross multiply
    6,427.76x = 9,640.46 × 2,916.92
  4. Step 4: Simplify right side
    6,427.76x = 28,120,481.98
  5. Step 5: Solve for x
    x = 28,120,481.98/6,427.76
  6. Step 6: Final answer
    x = 4,374.85

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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.