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Finding the Fourth Proportional to 8,664.30, 12,988.08 and 5,535.54

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Solution

The fourth proportional to 8,664.30, 12,988.08 and 5,535.54 is: 8,297.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.30 : 12,988.08 = 5,535.54 : x
  2. Step 2: Convert to fraction form
    8,664.30/12,988.08 = 5,535.54/x
  3. Step 3: Cross multiply
    8,664.30x = 12,988.08 × 5,535.54
  4. Step 4: Simplify right side
    8,664.30x = 71,896,036.36
  5. Step 5: Solve for x
    x = 71,896,036.36/8,664.30
  6. Step 6: Final answer
    x = 8,297.96

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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.