Home / 3,139.76-4,708.13-2,100.94

Finding the Fourth Proportional to 3,139.76, 4,708.13 and 2,100.94

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Solution

The fourth proportional to 3,139.76, 4,708.13 and 2,100.94 is: 3,150.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.76 : 4,708.13 = 2,100.94 : x
  2. Step 2: Convert to fraction form
    3,139.76/4,708.13 = 2,100.94/x
  3. Step 3: Cross multiply
    3,139.76x = 4,708.13 × 2,100.94
  4. Step 4: Simplify right side
    3,139.76x = 9,891,476.37
  5. Step 5: Solve for x
    x = 9,891,476.37/3,139.76
  6. Step 6: Final answer
    x = 3,150.39

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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.