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Finding the Fourth Proportional to 8,928.81, 13,390.17 and 3,004.79

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Solution

The fourth proportional to 8,928.81, 13,390.17 and 3,004.79 is: 4,506.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.81 : 13,390.17 = 3,004.79 : x
  2. Step 2: Convert to fraction form
    8,928.81/13,390.17 = 3,004.79/x
  3. Step 3: Cross multiply
    8,928.81x = 13,390.17 × 3,004.79
  4. Step 4: Simplify right side
    8,928.81x = 40,234,581.96
  5. Step 5: Solve for x
    x = 40,234,581.96/8,928.81
  6. Step 6: Final answer
    x = 4,506.15

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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.