Home / 2,490.20-3,735.30-758.60

Finding the Fourth Proportional to 2,490.20, 3,735.30 and 758.60

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Solution

The fourth proportional to 2,490.20, 3,735.30 and 758.60 is: 1,137.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.20 : 3,735.30 = 758.60 : x
  2. Step 2: Convert to fraction form
    2,490.20/3,735.30 = 758.60/x
  3. Step 3: Cross multiply
    2,490.20x = 3,735.30 × 758.60
  4. Step 4: Simplify right side
    2,490.20x = 2,833,598.58
  5. Step 5: Solve for x
    x = 2,833,598.58/2,490.20
  6. Step 6: Final answer
    x = 1,137.90

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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.