Home / 3,126.20-4,689.31-1,370.81

Finding the Fourth Proportional to 3,126.20, 4,689.31 and 1,370.81

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Solution

The fourth proportional to 3,126.20, 4,689.31 and 1,370.81 is: 2,056.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.20 : 4,689.31 = 1,370.81 : x
  2. Step 2: Convert to fraction form
    3,126.20/4,689.31 = 1,370.81/x
  3. Step 3: Cross multiply
    3,126.20x = 4,689.31 × 1,370.81
  4. Step 4: Simplify right side
    3,126.20x = 6,428,126.17
  5. Step 5: Solve for x
    x = 6,428,126.17/3,126.20
  6. Step 6: Final answer
    x = 2,056.21

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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.