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Finding the Fourth Proportional to 8,323.80, 11,487.21 and 4,788.18

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Solution

The fourth proportional to 8,323.80, 11,487.21 and 4,788.18 is: 6,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,323.80 : 11,487.21 = 4,788.18 : x
  2. Step 2: Convert to fraction form
    8,323.80/11,487.21 = 4,788.18/x
  3. Step 3: Cross multiply
    8,323.80x = 11,487.21 × 4,788.18
  4. Step 4: Simplify right side
    8,323.80x = 55,002,829.18
  5. Step 5: Solve for x
    x = 55,002,829.18/8,323.80
  6. Step 6: Final answer
    x = 6,607.90

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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.