Home / 2,428.40-3,643.68-1,273.88

Finding the Fourth Proportional to 2,428.40, 3,643.68 and 1,273.88

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Solution

The fourth proportional to 2,428.40, 3,643.68 and 1,273.88 is: 1,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.40 : 3,643.68 = 1,273.88 : x
  2. Step 2: Convert to fraction form
    2,428.40/3,643.68 = 1,273.88/x
  3. Step 3: Cross multiply
    2,428.40x = 3,643.68 × 1,273.88
  4. Step 4: Simplify right side
    2,428.40x = 4,641,592.86
  5. Step 5: Solve for x
    x = 4,641,592.86/2,428.40
  6. Step 6: Final answer
    x = 1,911.38

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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.