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Finding the Fourth Proportional to 8,376.66, 12,615.17 and 7,629.32

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Solution

The fourth proportional to 8,376.66, 12,615.17 and 7,629.32 is: 11,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376.66 : 12,615.17 = 7,629.32 : x
  2. Step 2: Convert to fraction form
    8,376.66/12,615.17 = 7,629.32/x
  3. Step 3: Cross multiply
    8,376.66x = 12,615.17 × 7,629.32
  4. Step 4: Simplify right side
    8,376.66x = 96,245,162.18
  5. Step 5: Solve for x
    x = 96,245,162.18/8,376.66
  6. Step 6: Final answer
    x = 11,489.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.