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Finding the Fourth Proportional to 8,899.60, 13,336.98 and 4,217.80

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Solution

The fourth proportional to 8,899.60, 13,336.98 and 4,217.80 is: 6,320.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.60 : 13,336.98 = 4,217.80 : x
  2. Step 2: Convert to fraction form
    8,899.60/13,336.98 = 4,217.80/x
  3. Step 3: Cross multiply
    8,899.60x = 13,336.98 × 4,217.80
  4. Step 4: Simplify right side
    8,899.60x = 56,252,714.24
  5. Step 5: Solve for x
    x = 56,252,714.24/8,899.60
  6. Step 6: Final answer
    x = 6,320.81

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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.