Home / 3,431.28-4,731.88-2,087.11

Finding the Fourth Proportional to 3,431.28, 4,731.88 and 2,087.11

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Solution

The fourth proportional to 3,431.28, 4,731.88 and 2,087.11 is: 2,878.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.28 : 4,731.88 = 2,087.11 : x
  2. Step 2: Convert to fraction form
    3,431.28/4,731.88 = 2,087.11/x
  3. Step 3: Cross multiply
    3,431.28x = 4,731.88 × 2,087.11
  4. Step 4: Simplify right side
    3,431.28x = 9,875,954.07
  5. Step 5: Solve for x
    x = 9,875,954.07/3,431.28
  6. Step 6: Final answer
    x = 2,878.21

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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.