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Finding the Fourth Proportional to 4,666.60, 6,999.90 and 3,961.90

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Solution

The fourth proportional to 4,666.60, 6,999.90 and 3,961.90 is: 5,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,666.60 : 6,999.90 = 3,961.90 : x
  2. Step 2: Convert to fraction form
    4,666.60/6,999.90 = 3,961.90/x
  3. Step 3: Cross multiply
    4,666.60x = 6,999.90 × 3,961.90
  4. Step 4: Simplify right side
    4,666.60x = 27,732,903.81
  5. Step 5: Solve for x
    x = 27,732,903.81/4,666.60
  6. Step 6: Final answer
    x = 5,942.85

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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.