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Finding the Fourth Proportional to 8,693.88, 11,988.52 and 7,439.09

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Solution

The fourth proportional to 8,693.88, 11,988.52 and 7,439.09 is: 10,258.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.88 : 11,988.52 = 7,439.09 : x
  2. Step 2: Convert to fraction form
    8,693.88/11,988.52 = 7,439.09/x
  3. Step 3: Cross multiply
    8,693.88x = 11,988.52 × 7,439.09
  4. Step 4: Simplify right side
    8,693.88x = 89,183,709.99
  5. Step 5: Solve for x
    x = 89,183,709.99/8,693.88
  6. Step 6: Final answer
    x = 10,258.22

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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.