Home / 5,149.63-7,105.21-2,911.46

Finding the Fourth Proportional to 5,149.63, 7,105.21 and 2,911.46

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Solution

The fourth proportional to 5,149.63, 7,105.21 and 2,911.46 is: 4,017.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.63 : 7,105.21 = 2,911.46 : x
  2. Step 2: Convert to fraction form
    5,149.63/7,105.21 = 2,911.46/x
  3. Step 3: Cross multiply
    5,149.63x = 7,105.21 × 2,911.46
  4. Step 4: Simplify right side
    5,149.63x = 20,686,497.36
  5. Step 5: Solve for x
    x = 20,686,497.36/5,149.63
  6. Step 6: Final answer
    x = 4,017.09

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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.