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Finding the Fourth Proportional to 6,458.56, 8,912.64 and 3,664

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Solution

The fourth proportional to 6,458.56, 8,912.64 and 3,664 is: 5,056.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,458.56 : 8,912.64 = 3,664 : x
  2. Step 2: Convert to fraction form
    6,458.56/8,912.64 = 3,664/x
  3. Step 3: Cross multiply
    6,458.56x = 8,912.64 × 3,664
  4. Step 4: Simplify right side
    6,458.56x = 32,655,912.96
  5. Step 5: Solve for x
    x = 32,655,912.96/6,458.56
  6. Step 6: Final answer
    x = 5,056.22

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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.