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Finding the Fourth Proportional to 8,246.80, 12,345.90 and 7,274.80

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Solution

The fourth proportional to 8,246.80, 12,345.90 and 7,274.80 is: 10,890.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,246.80 : 12,345.90 = 7,274.80 : x
  2. Step 2: Convert to fraction form
    8,246.80/12,345.90 = 7,274.80/x
  3. Step 3: Cross multiply
    8,246.80x = 12,345.90 × 7,274.80
  4. Step 4: Simplify right side
    8,246.80x = 89,813,953.32
  5. Step 5: Solve for x
    x = 89,813,953.32/8,246.80
  6. Step 6: Final answer
    x = 10,890.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.