Home / 5,419.42-8,126.94-2,645.28

Finding the Fourth Proportional to 5,419.42, 8,126.94 and 2,645.28

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Solution

The fourth proportional to 5,419.42, 8,126.94 and 2,645.28 is: 3,966.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.42 : 8,126.94 = 2,645.28 : x
  2. Step 2: Convert to fraction form
    5,419.42/8,126.94 = 2,645.28/x
  3. Step 3: Cross multiply
    5,419.42x = 8,126.94 × 2,645.28
  4. Step 4: Simplify right side
    5,419.42x = 21,498,031.84
  5. Step 5: Solve for x
    x = 21,498,031.84/5,419.42
  6. Step 6: Final answer
    x = 3,966.85

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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.