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Finding the Fourth Proportional to 8,983.72, 12,403.86 and 6,750.76

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Solution

The fourth proportional to 8,983.72, 12,403.86 and 6,750.76 is: 9,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,983.72 : 12,403.86 = 6,750.76 : x
  2. Step 2: Convert to fraction form
    8,983.72/12,403.86 = 6,750.76/x
  3. Step 3: Cross multiply
    8,983.72x = 12,403.86 × 6,750.76
  4. Step 4: Simplify right side
    8,983.72x = 83,735,481.93
  5. Step 5: Solve for x
    x = 83,735,481.93/8,983.72
  6. Step 6: Final answer
    x = 9,320.80

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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.