Home / 2,420.96-3,635.75-1,983.04

Finding the Fourth Proportional to 2,420.96, 3,635.75 and 1,983.04

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Solution

The fourth proportional to 2,420.96, 3,635.75 and 1,983.04 is: 2,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.96 : 3,635.75 = 1,983.04 : x
  2. Step 2: Convert to fraction form
    2,420.96/3,635.75 = 1,983.04/x
  3. Step 3: Cross multiply
    2,420.96x = 3,635.75 × 1,983.04
  4. Step 4: Simplify right side
    2,420.96x = 7,209,837.68
  5. Step 5: Solve for x
    x = 7,209,837.68/2,420.96
  6. Step 6: Final answer
    x = 2,978.09

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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.