Home / 2,293.88-3,438.30-1,320.20

Finding the Fourth Proportional to 2,293.88, 3,438.30 and 1,320.20

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Solution

The fourth proportional to 2,293.88, 3,438.30 and 1,320.20 is: 1,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,293.88 : 3,438.30 = 1,320.20 : x
  2. Step 2: Convert to fraction form
    2,293.88/3,438.30 = 1,320.20/x
  3. Step 3: Cross multiply
    2,293.88x = 3,438.30 × 1,320.20
  4. Step 4: Simplify right side
    2,293.88x = 4,539,243.66
  5. Step 5: Solve for x
    x = 4,539,243.66/2,293.88
  6. Step 6: Final answer
    x = 1,978.85

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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.