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Finding the Fourth Proportional to 7,689.81, 11,532.19 and 3,008.62

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Solution

The fourth proportional to 7,689.81, 11,532.19 and 3,008.62 is: 4,511.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.81 : 11,532.19 = 3,008.62 : x
  2. Step 2: Convert to fraction form
    7,689.81/11,532.19 = 3,008.62/x
  3. Step 3: Cross multiply
    7,689.81x = 11,532.19 × 3,008.62
  4. Step 4: Simplify right side
    7,689.81x = 34,695,977.48
  5. Step 5: Solve for x
    x = 34,695,977.48/7,689.81
  6. Step 6: Final answer
    x = 4,511.94

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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.