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Finding the Fourth Proportional to 2,768.76, 4,148.28 and 2,700.72

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Solution

The fourth proportional to 2,768.76, 4,148.28 and 2,700.72 is: 4,046.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.76 : 4,148.28 = 2,700.72 : x
  2. Step 2: Convert to fraction form
    2,768.76/4,148.28 = 2,700.72/x
  3. Step 3: Cross multiply
    2,768.76x = 4,148.28 × 2,700.72
  4. Step 4: Simplify right side
    2,768.76x = 11,203,342.76
  5. Step 5: Solve for x
    x = 11,203,342.76/2,768.76
  6. Step 6: Final answer
    x = 4,046.34

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1.5x scale

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.