Home / 5,410.67-8,120.59-2,126.05

Finding the Fourth Proportional to 5,410.67, 8,120.59 and 2,126.05

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Solution

The fourth proportional to 5,410.67, 8,120.59 and 2,126.05 is: 3,190.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.67 : 8,120.59 = 2,126.05 : x
  2. Step 2: Convert to fraction form
    5,410.67/8,120.59 = 2,126.05/x
  3. Step 3: Cross multiply
    5,410.67x = 8,120.59 × 2,126.05
  4. Step 4: Simplify right side
    5,410.67x = 17,264,754.75
  5. Step 5: Solve for x
    x = 17,264,754.75/5,410.67
  6. Step 6: Final answer
    x = 3,190.87

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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.