Home / 3,428.29-4,731-1,936.12

Finding the Fourth Proportional to 3,428.29, 4,731 and 1,936.12

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Solution

The fourth proportional to 3,428.29, 4,731 and 1,936.12 is: 2,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.29 : 4,731 = 1,936.12 : x
  2. Step 2: Convert to fraction form
    3,428.29/4,731 = 1,936.12/x
  3. Step 3: Cross multiply
    3,428.29x = 4,731 × 1,936.12
  4. Step 4: Simplify right side
    3,428.29x = 9,159,783.72
  5. Step 5: Solve for x
    x = 9,159,783.72/3,428.29
  6. Step 6: Final answer
    x = 2,671.82

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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.