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Finding the Fourth Proportional to 7,885.80, 11,809.22 and 5,103.92

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Solution

The fourth proportional to 7,885.80, 11,809.22 and 5,103.92 is: 7,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.80 : 11,809.22 = 5,103.92 : x
  2. Step 2: Convert to fraction form
    7,885.80/11,809.22 = 5,103.92/x
  3. Step 3: Cross multiply
    7,885.80x = 11,809.22 × 5,103.92
  4. Step 4: Simplify right side
    7,885.80x = 60,273,229.58
  5. Step 5: Solve for x
    x = 60,273,229.58/7,885.80
  6. Step 6: Final answer
    x = 7,643.26

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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.