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Finding the Fourth Proportional to 7,873.35, 11,812.06 and 3,489.76

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Solution

The fourth proportional to 7,873.35, 11,812.06 and 3,489.76 is: 5,235.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.35 : 11,812.06 = 3,489.76 : x
  2. Step 2: Convert to fraction form
    7,873.35/11,812.06 = 3,489.76/x
  3. Step 3: Cross multiply
    7,873.35x = 11,812.06 × 3,489.76
  4. Step 4: Simplify right side
    7,873.35x = 41,221,273.63
  5. Step 5: Solve for x
    x = 41,221,273.63/7,873.35
  6. Step 6: Final answer
    x = 5,235.55

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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.