Home / 5,105.18-7,652.90-1,640

Finding the Fourth Proportional to 5,105.18, 7,652.90 and 1,640

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Solution

The fourth proportional to 5,105.18, 7,652.90 and 1,640 is: 2,458.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.18 : 7,652.90 = 1,640 : x
  2. Step 2: Convert to fraction form
    5,105.18/7,652.90 = 1,640/x
  3. Step 3: Cross multiply
    5,105.18x = 7,652.90 × 1,640
  4. Step 4: Simplify right side
    5,105.18x = 12,550,756
  5. Step 5: Solve for x
    x = 12,550,756/5,105.18
  6. Step 6: Final answer
    x = 2,458.44

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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.