Home / 10,638.90-15,958.96-3,243.60

Finding the Fourth Proportional to 10,638.90, 15,958.96 and 3,243.60

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Solution

The fourth proportional to 10,638.90, 15,958.96 and 3,243.60 is: 4,865.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.90 : 15,958.96 = 3,243.60 : x
  2. Step 2: Convert to fraction form
    10,638.90/15,958.96 = 3,243.60/x
  3. Step 3: Cross multiply
    10,638.90x = 15,958.96 × 3,243.60
  4. Step 4: Simplify right side
    10,638.90x = 51,764,482.66
  5. Step 5: Solve for x
    x = 51,764,482.66/10,638.90
  6. Step 6: Final answer
    x = 4,865.59

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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.