Home / 7,135.50-9,846.99-3,991.68

Finding the Fourth Proportional to 7,135.50, 9,846.99 and 3,991.68

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Solution

The fourth proportional to 7,135.50, 9,846.99 and 3,991.68 is: 5,508.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.50 : 9,846.99 = 3,991.68 : x
  2. Step 2: Convert to fraction form
    7,135.50/9,846.99 = 3,991.68/x
  3. Step 3: Cross multiply
    7,135.50x = 9,846.99 × 3,991.68
  4. Step 4: Simplify right side
    7,135.50x = 39,306,033.04
  5. Step 5: Solve for x
    x = 39,306,033.04/7,135.50
  6. Step 6: Final answer
    x = 5,508.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.