Home / 3,988.63-5,979.91-2,428.27

Finding the Fourth Proportional to 3,988.63, 5,979.91 and 2,428.27

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Solution

The fourth proportional to 3,988.63, 5,979.91 and 2,428.27 is: 3,640.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.63 : 5,979.91 = 2,428.27 : x
  2. Step 2: Convert to fraction form
    3,988.63/5,979.91 = 2,428.27/x
  3. Step 3: Cross multiply
    3,988.63x = 5,979.91 × 2,428.27
  4. Step 4: Simplify right side
    3,988.63x = 14,520,836.06
  5. Step 5: Solve for x
    x = 14,520,836.06/3,988.63
  6. Step 6: Final answer
    x = 3,640.56

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1.5x scale

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.