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Finding the Fourth Proportional to 8,405.46, 12,602.33 and 3,722.92

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Solution

The fourth proportional to 8,405.46, 12,602.33 and 3,722.92 is: 5,581.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.46 : 12,602.33 = 3,722.92 : x
  2. Step 2: Convert to fraction form
    8,405.46/12,602.33 = 3,722.92/x
  3. Step 3: Cross multiply
    8,405.46x = 12,602.33 × 3,722.92
  4. Step 4: Simplify right side
    8,405.46x = 46,917,539.80
  5. Step 5: Solve for x
    x = 46,917,539.80/8,405.46
  6. Step 6: Final answer
    x = 5,581.79

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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.