Home / 5,145.89-7,697.68-4,107.92

Finding the Fourth Proportional to 5,145.89, 7,697.68 and 4,107.92

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Solution

The fourth proportional to 5,145.89, 7,697.68 and 4,107.92 is: 6,144.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.89 : 7,697.68 = 4,107.92 : x
  2. Step 2: Convert to fraction form
    5,145.89/7,697.68 = 4,107.92/x
  3. Step 3: Cross multiply
    5,145.89x = 7,697.68 × 4,107.92
  4. Step 4: Simplify right side
    5,145.89x = 31,621,427.97
  5. Step 5: Solve for x
    x = 31,621,427.97/5,145.89
  6. Step 6: Final answer
    x = 6,144.99

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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.