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Finding the Fourth Proportional to 9,054.60, 12,489.09 and 6,371.42

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Solution

The fourth proportional to 9,054.60, 12,489.09 and 6,371.42 is: 8,788.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,054.60 : 12,489.09 = 6,371.42 : x
  2. Step 2: Convert to fraction form
    9,054.60/12,489.09 = 6,371.42/x
  3. Step 3: Cross multiply
    9,054.60x = 12,489.09 × 6,371.42
  4. Step 4: Simplify right side
    9,054.60x = 79,573,239.28
  5. Step 5: Solve for x
    x = 79,573,239.28/9,054.60
  6. Step 6: Final answer
    x = 8,788.16

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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.