Home / 3,101.50-4,274.97-2,158.66

Finding the Fourth Proportional to 3,101.50, 4,274.97 and 2,158.66

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Solution

The fourth proportional to 3,101.50, 4,274.97 and 2,158.66 is: 2,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.50 : 4,274.97 = 2,158.66 : x
  2. Step 2: Convert to fraction form
    3,101.50/4,274.97 = 2,158.66/x
  3. Step 3: Cross multiply
    3,101.50x = 4,274.97 × 2,158.66
  4. Step 4: Simplify right side
    3,101.50x = 9,228,206.74
  5. Step 5: Solve for x
    x = 9,228,206.74/3,101.50
  6. Step 6: Final answer
    x = 2,975.40

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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.