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Finding the Fourth Proportional to 8,920.82, 12,297.91 and 6,259.98

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Solution

The fourth proportional to 8,920.82, 12,297.91 and 6,259.98 is: 8,629.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.82 : 12,297.91 = 6,259.98 : x
  2. Step 2: Convert to fraction form
    8,920.82/12,297.91 = 6,259.98/x
  3. Step 3: Cross multiply
    8,920.82x = 12,297.91 × 6,259.98
  4. Step 4: Simplify right side
    8,920.82x = 76,984,670.64
  5. Step 5: Solve for x
    x = 76,984,670.64/8,920.82
  6. Step 6: Final answer
    x = 8,629.78

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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.