Home / 3,418.56-5,120.64-2,900.88

Finding the Fourth Proportional to 3,418.56, 5,120.64 and 2,900.88

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Solution

The fourth proportional to 3,418.56, 5,120.64 and 2,900.88 is: 4,345.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.56 : 5,120.64 = 2,900.88 : x
  2. Step 2: Convert to fraction form
    3,418.56/5,120.64 = 2,900.88/x
  3. Step 3: Cross multiply
    3,418.56x = 5,120.64 × 2,900.88
  4. Step 4: Simplify right side
    3,418.56x = 14,854,362.16
  5. Step 5: Solve for x
    x = 14,854,362.16/3,418.56
  6. Step 6: Final answer
    x = 4,345.21

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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.