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Finding the Fourth Proportional to 8,469.28, 12,688.08 and 7,554.16

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Solution

The fourth proportional to 8,469.28, 12,688.08 and 7,554.16 is: 11,317.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.28 : 12,688.08 = 7,554.16 : x
  2. Step 2: Convert to fraction form
    8,469.28/12,688.08 = 7,554.16/x
  3. Step 3: Cross multiply
    8,469.28x = 12,688.08 × 7,554.16
  4. Step 4: Simplify right side
    8,469.28x = 95,847,786.41
  5. Step 5: Solve for x
    x = 95,847,786.41/8,469.28
  6. Step 6: Final answer
    x = 11,317.11

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1.5x scale

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.