Home / 7,134.89-9,846.15-3,991.08

Finding the Fourth Proportional to 7,134.89, 9,846.15 and 3,991.08

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Solution

The fourth proportional to 7,134.89, 9,846.15 and 3,991.08 is: 5,507.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,134.89 : 9,846.15 = 3,991.08 : x
  2. Step 2: Convert to fraction form
    7,134.89/9,846.15 = 3,991.08/x
  3. Step 3: Cross multiply
    7,134.89x = 9,846.15 × 3,991.08
  4. Step 4: Simplify right side
    7,134.89x = 39,296,750.14
  5. Step 5: Solve for x
    x = 39,296,750.14/7,134.89
  6. Step 6: Final answer
    x = 5,507.69

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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.