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Finding the Fourth Proportional to 8,899.89, 12,281.69 and 6,352.34

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Solution

The fourth proportional to 8,899.89, 12,281.69 and 6,352.34 is: 8,766.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.89 : 12,281.69 = 6,352.34 : x
  2. Step 2: Convert to fraction form
    8,899.89/12,281.69 = 6,352.34/x
  3. Step 3: Cross multiply
    8,899.89x = 12,281.69 × 6,352.34
  4. Step 4: Simplify right side
    8,899.89x = 78,017,425.13
  5. Step 5: Solve for x
    x = 78,017,425.13/8,899.89
  6. Step 6: Final answer
    x = 8,766.11

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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.