Home / 5,149.77-7,106.61-2,911.56

Finding the Fourth Proportional to 5,149.77, 7,106.61 and 2,911.56

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Solution

The fourth proportional to 5,149.77, 7,106.61 and 2,911.56 is: 4,017.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.77 : 7,106.61 = 2,911.56 : x
  2. Step 2: Convert to fraction form
    5,149.77/7,106.61 = 2,911.56/x
  3. Step 3: Cross multiply
    5,149.77x = 7,106.61 × 2,911.56
  4. Step 4: Simplify right side
    5,149.77x = 20,691,321.41
  5. Step 5: Solve for x
    x = 20,691,321.41/5,149.77
  6. Step 6: Final answer
    x = 4,017.91

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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.