Home / 2,733.90-3,771.84-1,538.70

Finding the Fourth Proportional to 2,733.90, 3,771.84 and 1,538.70

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Solution

The fourth proportional to 2,733.90, 3,771.84 and 1,538.70 is: 2,122.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,733.90 : 3,771.84 = 1,538.70 : x
  2. Step 2: Convert to fraction form
    2,733.90/3,771.84 = 1,538.70/x
  3. Step 3: Cross multiply
    2,733.90x = 3,771.84 × 1,538.70
  4. Step 4: Simplify right side
    2,733.90x = 5,803,730.21
  5. Step 5: Solve for x
    x = 5,803,730.21/2,733.90
  6. Step 6: Final answer
    x = 2,122.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.