Home / 2,765.70-4,147.45-916.30

Finding the Fourth Proportional to 2,765.70, 4,147.45 and 916.30

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Solution

The fourth proportional to 2,765.70, 4,147.45 and 916.30 is: 1,374.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.70 : 4,147.45 = 916.30 : x
  2. Step 2: Convert to fraction form
    2,765.70/4,147.45 = 916.30/x
  3. Step 3: Cross multiply
    2,765.70x = 4,147.45 × 916.30
  4. Step 4: Simplify right side
    2,765.70x = 3,800,308.44
  5. Step 5: Solve for x
    x = 3,800,308.44/2,765.70
  6. Step 6: Final answer
    x = 1,374.09

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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.