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Finding the Fourth Proportional to 8,228.79, 12,279.91 and 7,353.99

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Solution

The fourth proportional to 8,228.79, 12,279.91 and 7,353.99 is: 10,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,228.79 : 12,279.91 = 7,353.99 : x
  2. Step 2: Convert to fraction form
    8,228.79/12,279.91 = 7,353.99/x
  3. Step 3: Cross multiply
    8,228.79x = 12,279.91 × 7,353.99
  4. Step 4: Simplify right side
    8,228.79x = 90,306,316.96
  5. Step 5: Solve for x
    x = 90,306,316.96/8,228.79
  6. Step 6: Final answer
    x = 10,974.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.