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Finding the Fourth Proportional to 6,396.81, 8,827.47 and 3,564.18

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Solution

The fourth proportional to 6,396.81, 8,827.47 and 3,564.18 is: 4,918.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,396.81 : 8,827.47 = 3,564.18 : x
  2. Step 2: Convert to fraction form
    6,396.81/8,827.47 = 3,564.18/x
  3. Step 3: Cross multiply
    6,396.81x = 8,827.47 × 3,564.18
  4. Step 4: Simplify right side
    6,396.81x = 31,462,658.92
  5. Step 5: Solve for x
    x = 31,462,658.92/6,396.81
  6. Step 6: Final answer
    x = 4,918.49

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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.