Home / 7,135.15-9,846.48-3,991.36

Finding the Fourth Proportional to 7,135.15, 9,846.48 and 3,991.36

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Solution

The fourth proportional to 7,135.15, 9,846.48 and 3,991.36 is: 5,508.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.15 : 9,846.48 = 3,991.36 : x
  2. Step 2: Convert to fraction form
    7,135.15/9,846.48 = 3,991.36/x
  3. Step 3: Cross multiply
    7,135.15x = 9,846.48 × 3,991.36
  4. Step 4: Simplify right side
    7,135.15x = 39,300,846.41
  5. Step 5: Solve for x
    x = 39,300,846.41/7,135.15
  6. Step 6: Final answer
    x = 5,508.06

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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.