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Finding the Fourth Proportional to 7,886.46, 11,811.42 and 5,659.50

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Solution

The fourth proportional to 7,886.46, 11,811.42 and 5,659.50 is: 8,476.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.46 : 11,811.42 = 5,659.50 : x
  2. Step 2: Convert to fraction form
    7,886.46/11,811.42 = 5,659.50/x
  3. Step 3: Cross multiply
    7,886.46x = 11,811.42 × 5,659.50
  4. Step 4: Simplify right side
    7,886.46x = 66,846,731.49
  5. Step 5: Solve for x
    x = 66,846,731.49/7,886.46
  6. Step 6: Final answer
    x = 8,476.14

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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.