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Finding the Fourth Proportional to 8,260.72, 12,391.14 and 2,104.72

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Solution

The fourth proportional to 8,260.72, 12,391.14 and 2,104.72 is: 3,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,260.72 : 12,391.14 = 2,104.72 : x
  2. Step 2: Convert to fraction form
    8,260.72/12,391.14 = 2,104.72/x
  3. Step 3: Cross multiply
    8,260.72x = 12,391.14 × 2,104.72
  4. Step 4: Simplify right side
    8,260.72x = 26,079,880.18
  5. Step 5: Solve for x
    x = 26,079,880.18/8,260.72
  6. Step 6: Final answer
    x = 3,157.10

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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.