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Finding the Fourth Proportional to 5,670.40, 8,505.60 and 2,551.90

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Solution

The fourth proportional to 5,670.40, 8,505.60 and 2,551.90 is: 3,827.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,670.40 : 8,505.60 = 2,551.90 : x
  2. Step 2: Convert to fraction form
    5,670.40/8,505.60 = 2,551.90/x
  3. Step 3: Cross multiply
    5,670.40x = 8,505.60 × 2,551.90
  4. Step 4: Simplify right side
    5,670.40x = 21,705,440.64
  5. Step 5: Solve for x
    x = 21,705,440.64/5,670.40
  6. Step 6: Final answer
    x = 3,827.85

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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.