Home / 7,428.72-11,142.12-2,498.28

Finding the Fourth Proportional to 7,428.72, 11,142.12 and 2,498.28

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Solution

The fourth proportional to 7,428.72, 11,142.12 and 2,498.28 is: 3,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.72 : 11,142.12 = 2,498.28 : x
  2. Step 2: Convert to fraction form
    7,428.72/11,142.12 = 2,498.28/x
  3. Step 3: Cross multiply
    7,428.72x = 11,142.12 × 2,498.28
  4. Step 4: Simplify right side
    7,428.72x = 27,836,135.55
  5. Step 5: Solve for x
    x = 27,836,135.55/7,428.72
  6. Step 6: Final answer
    x = 3,747.10

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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.