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Finding the Fourth Proportional to 8,899.84, 13,339.12 and 4,149.60

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Solution

The fourth proportional to 8,899.84, 13,339.12 and 4,149.60 is: 6,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.84 : 13,339.12 = 4,149.60 : x
  2. Step 2: Convert to fraction form
    8,899.84/13,339.12 = 4,149.60/x
  3. Step 3: Cross multiply
    8,899.84x = 13,339.12 × 4,149.60
  4. Step 4: Simplify right side
    8,899.84x = 55,352,012.35
  5. Step 5: Solve for x
    x = 55,352,012.35/8,899.84
  6. Step 6: Final answer
    x = 6,219.44

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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.