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Finding the Fourth Proportional to 11,419.79, 15,757.79 and 6,383.39

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Solution

The fourth proportional to 11,419.79, 15,757.79 and 6,383.39 is: 8,808.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.79 : 15,757.79 = 6,383.39 : x
  2. Step 2: Convert to fraction form
    11,419.79/15,757.79 = 6,383.39/x
  3. Step 3: Cross multiply
    11,419.79x = 15,757.79 × 6,383.39
  4. Step 4: Simplify right side
    11,419.79x = 100,588,056.28
  5. Step 5: Solve for x
    x = 100,588,056.28/11,419.79
  6. Step 6: Final answer
    x = 8,808.22

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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.