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Finding the Fourth Proportional to 7,904.56, 11,855.02 and 3,519.63

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Solution

The fourth proportional to 7,904.56, 11,855.02 and 3,519.63 is: 5,278.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,904.56 : 11,855.02 = 3,519.63 : x
  2. Step 2: Convert to fraction form
    7,904.56/11,855.02 = 3,519.63/x
  3. Step 3: Cross multiply
    7,904.56x = 11,855.02 × 3,519.63
  4. Step 4: Simplify right side
    7,904.56x = 41,725,207.17
  5. Step 5: Solve for x
    x = 41,725,207.17/7,904.56
  6. Step 6: Final answer
    x = 5,278.62

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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.