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Finding the Fourth Proportional to 6,624.66, 9,141.87 and 3,640.50

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Solution

The fourth proportional to 6,624.66, 9,141.87 and 3,640.50 is: 5,023.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,624.66 : 9,141.87 = 3,640.50 : x
  2. Step 2: Convert to fraction form
    6,624.66/9,141.87 = 3,640.50/x
  3. Step 3: Cross multiply
    6,624.66x = 9,141.87 × 3,640.50
  4. Step 4: Simplify right side
    6,624.66x = 33,280,977.74
  5. Step 5: Solve for x
    x = 33,280,977.74/6,624.66
  6. Step 6: Final answer
    x = 5,023.80

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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.