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Finding the Fourth Proportional to 8,683.65, 11,988.58 and 5,704.69

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Solution

The fourth proportional to 8,683.65, 11,988.58 and 5,704.69 is: 7,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.65 : 11,988.58 = 5,704.69 : x
  2. Step 2: Convert to fraction form
    8,683.65/11,988.58 = 5,704.69/x
  3. Step 3: Cross multiply
    8,683.65x = 11,988.58 × 5,704.69
  4. Step 4: Simplify right side
    8,683.65x = 68,391,132.44
  5. Step 5: Solve for x
    x = 68,391,132.44/8,683.65
  6. Step 6: Final answer
    x = 7,875.85

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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.