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Finding the Fourth Proportional to 5,905.56, 8,861.94 and 2,620.20

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Solution

The fourth proportional to 5,905.56, 8,861.94 and 2,620.20 is: 3,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,905.56 : 8,861.94 = 2,620.20 : x
  2. Step 2: Convert to fraction form
    5,905.56/8,861.94 = 2,620.20/x
  3. Step 3: Cross multiply
    5,905.56x = 8,861.94 × 2,620.20
  4. Step 4: Simplify right side
    5,905.56x = 23,220,055.19
  5. Step 5: Solve for x
    x = 23,220,055.19/5,905.56
  6. Step 6: Final answer
    x = 3,931.90

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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.