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Finding the Fourth Proportional to 6,513.81, 8,989.00 and 3,529.64

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Solution

The fourth proportional to 6,513.81, 8,989.00 and 3,529.64 is: 4,870.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.81 : 8,989.00 = 3,529.64 : x
  2. Step 2: Convert to fraction form
    6,513.81/8,989.00 = 3,529.64/x
  3. Step 3: Cross multiply
    6,513.81x = 8,989.00 × 3,529.64
  4. Step 4: Simplify right side
    6,513.81x = 31,727,916.90
  5. Step 5: Solve for x
    x = 31,727,916.90/6,513.81
  6. Step 6: Final answer
    x = 4,870.87

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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.