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Finding the Fourth Proportional to 1,730.76, 2,596.50 and 756.60

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Solution

The fourth proportional to 1,730.76, 2,596.50 and 756.60 is: 1,135.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.76 : 2,596.50 = 756.60 : x
  2. Step 2: Convert to fraction form
    1,730.76/2,596.50 = 756.60/x
  3. Step 3: Cross multiply
    1,730.76x = 2,596.50 × 756.60
  4. Step 4: Simplify right side
    1,730.76x = 1,964,511.90
  5. Step 5: Solve for x
    x = 1,964,511.90/1,730.76
  6. Step 6: Final answer
    x = 1,135.06

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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.