Home / 3,126.84-4,311.08-2,005.76

Finding the Fourth Proportional to 3,126.84, 4,311.08 and 2,005.76

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Solution

The fourth proportional to 3,126.84, 4,311.08 and 2,005.76 is: 2,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.84 : 4,311.08 = 2,005.76 : x
  2. Step 2: Convert to fraction form
    3,126.84/4,311.08 = 2,005.76/x
  3. Step 3: Cross multiply
    3,126.84x = 4,311.08 × 2,005.76
  4. Step 4: Simplify right side
    3,126.84x = 8,646,991.82
  5. Step 5: Solve for x
    x = 8,646,991.82/3,126.84
  6. Step 6: Final answer
    x = 2,765.41

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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.