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Finding the Fourth Proportional to 6,368.70, 8,788.80 and 3,535.96

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Solution

The fourth proportional to 6,368.70, 8,788.80 and 3,535.96 is: 4,879.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,368.70 : 8,788.80 = 3,535.96 : x
  2. Step 2: Convert to fraction form
    6,368.70/8,788.80 = 3,535.96/x
  3. Step 3: Cross multiply
    6,368.70x = 8,788.80 × 3,535.96
  4. Step 4: Simplify right side
    6,368.70x = 31,076,845.25
  5. Step 5: Solve for x
    x = 31,076,845.25/6,368.70
  6. Step 6: Final answer
    x = 4,879.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.