Home / 2,428.11-3,358.68-2,271.39

Finding the Fourth Proportional to 2,428.11, 3,358.68 and 2,271.39

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Solution

The fourth proportional to 2,428.11, 3,358.68 and 2,271.39 is: 3,141.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.11 : 3,358.68 = 2,271.39 : x
  2. Step 2: Convert to fraction form
    2,428.11/3,358.68 = 2,271.39/x
  3. Step 3: Cross multiply
    2,428.11x = 3,358.68 × 2,271.39
  4. Step 4: Simplify right side
    2,428.11x = 7,628,872.17
  5. Step 5: Solve for x
    x = 7,628,872.17/2,428.11
  6. Step 6: Final answer
    x = 3,141.90

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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.