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Finding the Fourth Proportional to 8,480.74, 11,714.32 and 6,515.47

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Solution

The fourth proportional to 8,480.74, 11,714.32 and 6,515.47 is: 8,999.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.74 : 11,714.32 = 6,515.47 : x
  2. Step 2: Convert to fraction form
    8,480.74/11,714.32 = 6,515.47/x
  3. Step 3: Cross multiply
    8,480.74x = 11,714.32 × 6,515.47
  4. Step 4: Simplify right side
    8,480.74x = 76,324,300.53
  5. Step 5: Solve for x
    x = 76,324,300.53/8,480.74
  6. Step 6: Final answer
    x = 8,999.73

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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.