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Finding the Fourth Proportional to 8,848.59, 12,131.92 and 8,690.64

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Solution

The fourth proportional to 8,848.59, 12,131.92 and 8,690.64 is: 11,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,848.59 : 12,131.92 = 8,690.64 : x
  2. Step 2: Convert to fraction form
    8,848.59/12,131.92 = 8,690.64/x
  3. Step 3: Cross multiply
    8,848.59x = 12,131.92 × 8,690.64
  4. Step 4: Simplify right side
    8,848.59x = 105,434,149.23
  5. Step 5: Solve for x
    x = 105,434,149.23/8,848.59
  6. Step 6: Final answer
    x = 11,915.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.