Home / 3,126.46-4,689.96-1,277.70

Finding the Fourth Proportional to 3,126.46, 4,689.96 and 1,277.70

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Solution

The fourth proportional to 3,126.46, 4,689.96 and 1,277.70 is: 1,916.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.46 : 4,689.96 = 1,277.70 : x
  2. Step 2: Convert to fraction form
    3,126.46/4,689.96 = 1,277.70/x
  3. Step 3: Cross multiply
    3,126.46x = 4,689.96 × 1,277.70
  4. Step 4: Simplify right side
    3,126.46x = 5,992,361.89
  5. Step 5: Solve for x
    x = 5,992,361.89/3,126.46
  6. Step 6: Final answer
    x = 1,916.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.