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Finding the Fourth Proportional to 8,333.80, 12,480.45 and 4,429.60

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Solution

The fourth proportional to 8,333.80, 12,480.45 and 4,429.60 is: 6,633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333.80 : 12,480.45 = 4,429.60 : x
  2. Step 2: Convert to fraction form
    8,333.80/12,480.45 = 4,429.60/x
  3. Step 3: Cross multiply
    8,333.80x = 12,480.45 × 4,429.60
  4. Step 4: Simplify right side
    8,333.80x = 55,283,401.32
  5. Step 5: Solve for x
    x = 55,283,401.32/8,333.80
  6. Step 6: Final answer
    x = 6,633.64

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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.