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Finding the Fourth Proportional to 8,730.65, 12,017.87 and 7,609.64

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Solution

The fourth proportional to 8,730.65, 12,017.87 and 7,609.64 is: 10,474.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,730.65 : 12,017.87 = 7,609.64 : x
  2. Step 2: Convert to fraction form
    8,730.65/12,017.87 = 7,609.64/x
  3. Step 3: Cross multiply
    8,730.65x = 12,017.87 × 7,609.64
  4. Step 4: Simplify right side
    8,730.65x = 91,451,664.27
  5. Step 5: Solve for x
    x = 91,451,664.27/8,730.65
  6. Step 6: Final answer
    x = 10,474.78

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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.