Home / 5,420.42-8,126.06-2,645.66

Finding the Fourth Proportional to 5,420.42, 8,126.06 and 2,645.66

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Solution

The fourth proportional to 5,420.42, 8,126.06 and 2,645.66 is: 3,966.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.42 : 8,126.06 = 2,645.66 : x
  2. Step 2: Convert to fraction form
    5,420.42/8,126.06 = 2,645.66/x
  3. Step 3: Cross multiply
    5,420.42x = 8,126.06 × 2,645.66
  4. Step 4: Simplify right side
    5,420.42x = 21,498,791.90
  5. Step 5: Solve for x
    x = 21,498,791.90/5,420.42
  6. Step 6: Final answer
    x = 3,966.26

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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.