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Finding the Fourth Proportional to 8,658.02, 12,986.07 and 2,814.62

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Solution

The fourth proportional to 8,658.02, 12,986.07 and 2,814.62 is: 4,221.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.02 : 12,986.07 = 2,814.62 : x
  2. Step 2: Convert to fraction form
    8,658.02/12,986.07 = 2,814.62/x
  3. Step 3: Cross multiply
    8,658.02x = 12,986.07 × 2,814.62
  4. Step 4: Simplify right side
    8,658.02x = 36,550,852.34
  5. Step 5: Solve for x
    x = 36,550,852.34/8,658.02
  6. Step 6: Final answer
    x = 4,221.62

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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.