Home / 3,428.39-4,731.31-1,936.47

Finding the Fourth Proportional to 3,428.39, 4,731.31 and 1,936.47

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Solution

The fourth proportional to 3,428.39, 4,731.31 and 1,936.47 is: 2,672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.39 : 4,731.31 = 1,936.47 : x
  2. Step 2: Convert to fraction form
    3,428.39/4,731.31 = 1,936.47/x
  3. Step 3: Cross multiply
    3,428.39x = 4,731.31 × 1,936.47
  4. Step 4: Simplify right side
    3,428.39x = 9,162,060.04
  5. Step 5: Solve for x
    x = 9,162,060.04/3,428.39
  6. Step 6: Final answer
    x = 2,672.41

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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.