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Finding the Fourth Proportional to 6,438.54, 9,658.44 and 2,056.68

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Solution

The fourth proportional to 6,438.54, 9,658.44 and 2,056.68 is: 3,085.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.54 : 9,658.44 = 2,056.68 : x
  2. Step 2: Convert to fraction form
    6,438.54/9,658.44 = 2,056.68/x
  3. Step 3: Cross multiply
    6,438.54x = 9,658.44 × 2,056.68
  4. Step 4: Simplify right side
    6,438.54x = 19,864,320.38
  5. Step 5: Solve for x
    x = 19,864,320.38/6,438.54
  6. Step 6: Final answer
    x = 3,085.22

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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.