Home / 5,149.85-7,107.09-2,911.93

Finding the Fourth Proportional to 5,149.85, 7,107.09 and 2,911.93

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Solution

The fourth proportional to 5,149.85, 7,107.09 and 2,911.93 is: 4,018.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.85 : 7,107.09 = 2,911.93 : x
  2. Step 2: Convert to fraction form
    5,149.85/7,107.09 = 2,911.93/x
  3. Step 3: Cross multiply
    5,149.85x = 7,107.09 × 2,911.93
  4. Step 4: Simplify right side
    5,149.85x = 20,695,330.82
  5. Step 5: Solve for x
    x = 20,695,330.82/5,149.85
  6. Step 6: Final answer
    x = 4,018.63

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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.