Home / 3,126.38-4,315.26-1,946.76

Finding the Fourth Proportional to 3,126.38, 4,315.26 and 1,946.76

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Solution

The fourth proportional to 3,126.38, 4,315.26 and 1,946.76 is: 2,687.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.38 : 4,315.26 = 1,946.76 : x
  2. Step 2: Convert to fraction form
    3,126.38/4,315.26 = 1,946.76/x
  3. Step 3: Cross multiply
    3,126.38x = 4,315.26 × 1,946.76
  4. Step 4: Simplify right side
    3,126.38x = 8,400,775.56
  5. Step 5: Solve for x
    x = 8,400,775.56/3,126.38
  6. Step 6: Final answer
    x = 2,687.06

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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.