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Finding the Fourth Proportional to 3,472.17, 4,791.63 and 1,980.17

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Solution

The fourth proportional to 3,472.17, 4,791.63 and 1,980.17 is: 2,732.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,472.17 : 4,791.63 = 1,980.17 : x
  2. Step 2: Convert to fraction form
    3,472.17/4,791.63 = 1,980.17/x
  3. Step 3: Cross multiply
    3,472.17x = 4,791.63 × 1,980.17
  4. Step 4: Simplify right side
    3,472.17x = 9,488,251.32
  5. Step 5: Solve for x
    x = 9,488,251.32/3,472.17
  6. Step 6: Final answer
    x = 2,732.65

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1.5x scale

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.