Home / 3,101.28-4,276.35-2,216.76

Finding the Fourth Proportional to 3,101.28, 4,276.35 and 2,216.76

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Solution

The fourth proportional to 3,101.28, 4,276.35 and 2,216.76 is: 3,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.28 : 4,276.35 = 2,216.76 : x
  2. Step 2: Convert to fraction form
    3,101.28/4,276.35 = 2,216.76/x
  3. Step 3: Cross multiply
    3,101.28x = 4,276.35 × 2,216.76
  4. Step 4: Simplify right side
    3,101.28x = 9,479,641.63
  5. Step 5: Solve for x
    x = 9,479,641.63/3,101.28
  6. Step 6: Final answer
    x = 3,056.69

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Half scale
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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.