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Finding the Fourth Proportional to 8,028.40, 12,040.80 and 5,274.40

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Solution

The fourth proportional to 8,028.40, 12,040.80 and 5,274.40 is: 7,910.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,028.40 : 12,040.80 = 5,274.40 : x
  2. Step 2: Convert to fraction form
    8,028.40/12,040.80 = 5,274.40/x
  3. Step 3: Cross multiply
    8,028.40x = 12,040.80 × 5,274.40
  4. Step 4: Simplify right side
    8,028.40x = 63,507,995.52
  5. Step 5: Solve for x
    x = 63,507,995.52/8,028.40
  6. Step 6: Final answer
    x = 7,910.42

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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.