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Finding the Fourth Proportional to 6,455.91, 8,912.10 and 4,963.30

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Solution

The fourth proportional to 6,455.91, 8,912.10 and 4,963.30 is: 6,851.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.91 : 8,912.10 = 4,963.30 : x
  2. Step 2: Convert to fraction form
    6,455.91/8,912.10 = 4,963.30/x
  3. Step 3: Cross multiply
    6,455.91x = 8,912.10 × 4,963.30
  4. Step 4: Simplify right side
    6,455.91x = 44,233,425.93
  5. Step 5: Solve for x
    x = 44,233,425.93/6,455.91
  6. Step 6: Final answer
    x = 6,851.62

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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.