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Finding the Fourth Proportional to 8,323.59, 11,486.90 and 4,786.80

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Solution

The fourth proportional to 8,323.59, 11,486.90 and 4,786.80 is: 6,605.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,323.59 : 11,486.90 = 4,786.80 : x
  2. Step 2: Convert to fraction form
    8,323.59/11,486.90 = 4,786.80/x
  3. Step 3: Cross multiply
    8,323.59x = 11,486.90 × 4,786.80
  4. Step 4: Simplify right side
    8,323.59x = 54,985,492.92
  5. Step 5: Solve for x
    x = 54,985,492.92/8,323.59
  6. Step 6: Final answer
    x = 6,605.98

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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.