Home / 10,638.31-15,954.82-3,240.85

Finding the Fourth Proportional to 10,638.31, 15,954.82 and 3,240.85

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Solution

The fourth proportional to 10,638.31, 15,954.82 and 3,240.85 is: 4,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.31 : 15,954.82 = 3,240.85 : x
  2. Step 2: Convert to fraction form
    10,638.31/15,954.82 = 3,240.85/x
  3. Step 3: Cross multiply
    10,638.31x = 15,954.82 × 3,240.85
  4. Step 4: Simplify right side
    10,638.31x = 51,707,178.40
  5. Step 5: Solve for x
    x = 51,707,178.40/10,638.31
  6. Step 6: Final answer
    x = 4,860.47

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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.