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Finding the Fourth Proportional to 8,930.36, 12,329.49 and 5,749.19

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Solution

The fourth proportional to 8,930.36, 12,329.49 and 5,749.19 is: 7,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.36 : 12,329.49 = 5,749.19 : x
  2. Step 2: Convert to fraction form
    8,930.36/12,329.49 = 5,749.19/x
  3. Step 3: Cross multiply
    8,930.36x = 12,329.49 × 5,749.19
  4. Step 4: Simplify right side
    8,930.36x = 70,884,518.97
  5. Step 5: Solve for x
    x = 70,884,518.97/8,930.36
  6. Step 6: Final answer
    x = 7,937.48

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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.