Home / 3,101.74-4,276.68-2,158.36

Finding the Fourth Proportional to 3,101.74, 4,276.68 and 2,158.36

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Solution

The fourth proportional to 3,101.74, 4,276.68 and 2,158.36 is: 2,975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.74 : 4,276.68 = 2,158.36 : x
  2. Step 2: Convert to fraction form
    3,101.74/4,276.68 = 2,158.36/x
  3. Step 3: Cross multiply
    3,101.74x = 4,276.68 × 2,158.36
  4. Step 4: Simplify right side
    3,101.74x = 9,230,615.04
  5. Step 5: Solve for x
    x = 9,230,615.04/3,101.74
  6. Step 6: Final answer
    x = 2,975.95

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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.