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Finding the Fourth Proportional to 7,104.47, 10,659.78 and 3,813.72

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Solution

The fourth proportional to 7,104.47, 10,659.78 and 3,813.72 is: 5,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,104.47 : 10,659.78 = 3,813.72 : x
  2. Step 2: Convert to fraction form
    7,104.47/10,659.78 = 3,813.72/x
  3. Step 3: Cross multiply
    7,104.47x = 10,659.78 × 3,813.72
  4. Step 4: Simplify right side
    7,104.47x = 40,653,416.18
  5. Step 5: Solve for x
    x = 40,653,416.18/7,104.47
  6. Step 6: Final answer
    x = 5,722.23

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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.