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Finding the Fourth Proportional to 2,791.64, 4,155.84 and 2,752.76

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Solution

The fourth proportional to 2,791.64, 4,155.84 and 2,752.76 is: 4,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.64 : 4,155.84 = 2,752.76 : x
  2. Step 2: Convert to fraction form
    2,791.64/4,155.84 = 2,752.76/x
  3. Step 3: Cross multiply
    2,791.64x = 4,155.84 × 2,752.76
  4. Step 4: Simplify right side
    2,791.64x = 11,440,030.12
  5. Step 5: Solve for x
    x = 11,440,030.12/2,791.64
  6. Step 6: Final answer
    x = 4,097.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.