Home / 2,971.28-4,449.72-1,815.44

Finding the Fourth Proportional to 2,971.28, 4,449.72 and 1,815.44

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Solution

The fourth proportional to 2,971.28, 4,449.72 and 1,815.44 is: 2,718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.28 : 4,449.72 = 1,815.44 : x
  2. Step 2: Convert to fraction form
    2,971.28/4,449.72 = 1,815.44/x
  3. Step 3: Cross multiply
    2,971.28x = 4,449.72 × 1,815.44
  4. Step 4: Simplify right side
    2,971.28x = 8,078,199.68
  5. Step 5: Solve for x
    x = 8,078,199.68/2,971.28
  6. Step 6: Final answer
    x = 2,718.76

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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.