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Finding the Fourth Proportional to 1,751.36, 2,626.12 and 518.60

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Solution

The fourth proportional to 1,751.36, 2,626.12 and 518.60 is: 777.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.36 : 2,626.12 = 518.60 : x
  2. Step 2: Convert to fraction form
    1,751.36/2,626.12 = 518.60/x
  3. Step 3: Cross multiply
    1,751.36x = 2,626.12 × 518.60
  4. Step 4: Simplify right side
    1,751.36x = 1,361,890.11
  5. Step 5: Solve for x
    x = 1,361,890.11/1,751.36
  6. Step 6: Final answer
    x = 777.62

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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.