Home / 5,109.31-7,662.30-1,645.75

Finding the Fourth Proportional to 5,109.31, 7,662.30 and 1,645.75

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Solution

The fourth proportional to 5,109.31, 7,662.30 and 1,645.75 is: 2,468.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.31 : 7,662.30 = 1,645.75 : x
  2. Step 2: Convert to fraction form
    5,109.31/7,662.30 = 1,645.75/x
  3. Step 3: Cross multiply
    5,109.31x = 7,662.30 × 1,645.75
  4. Step 4: Simplify right side
    5,109.31x = 12,610,230.23
  5. Step 5: Solve for x
    x = 12,610,230.23/5,109.31
  6. Step 6: Final answer
    x = 2,468.09

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1.5x scale

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.