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Finding the Fourth Proportional to 8,908.64, 12,283.86 and 6,663.32

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Solution

The fourth proportional to 8,908.64, 12,283.86 and 6,663.32 is: 9,187.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.64 : 12,283.86 = 6,663.32 : x
  2. Step 2: Convert to fraction form
    8,908.64/12,283.86 = 6,663.32/x
  3. Step 3: Cross multiply
    8,908.64x = 12,283.86 × 6,663.32
  4. Step 4: Simplify right side
    8,908.64x = 81,851,195.28
  5. Step 5: Solve for x
    x = 81,851,195.28/8,908.64
  6. Step 6: Final answer
    x = 9,187.85

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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.