Home / 5,149.77-7,106.61-2,911.59

Finding the Fourth Proportional to 5,149.77, 7,106.61 and 2,911.59

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Solution

The fourth proportional to 5,149.77, 7,106.61 and 2,911.59 is: 4,017.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.77 : 7,106.61 = 2,911.59 : x
  2. Step 2: Convert to fraction form
    5,149.77/7,106.61 = 2,911.59/x
  3. Step 3: Cross multiply
    5,149.77x = 7,106.61 × 2,911.59
  4. Step 4: Simplify right side
    5,149.77x = 20,691,534.61
  5. Step 5: Solve for x
    x = 20,691,534.61/5,149.77
  6. Step 6: Final answer
    x = 4,017.95

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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.