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Finding the Fourth Proportional to 7,957.56, 11,916.90 and 5,485.44

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Solution

The fourth proportional to 7,957.56, 11,916.90 and 5,485.44 is: 8,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.56 : 11,916.90 = 5,485.44 : x
  2. Step 2: Convert to fraction form
    7,957.56/11,916.90 = 5,485.44/x
  3. Step 3: Cross multiply
    7,957.56x = 11,916.90 × 5,485.44
  4. Step 4: Simplify right side
    7,957.56x = 65,369,439.94
  5. Step 5: Solve for x
    x = 65,369,439.94/7,957.56
  6. Step 6: Final answer
    x = 8,214.76

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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.