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Finding the Fourth Proportional to 4,980.99, 7,472.66 and 2,791.23

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Solution

The fourth proportional to 4,980.99, 7,472.66 and 2,791.23 is: 4,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.99 : 7,472.66 = 2,791.23 : x
  2. Step 2: Convert to fraction form
    4,980.99/7,472.66 = 2,791.23/x
  3. Step 3: Cross multiply
    4,980.99x = 7,472.66 × 2,791.23
  4. Step 4: Simplify right side
    4,980.99x = 20,857,898.82
  5. Step 5: Solve for x
    x = 20,857,898.82/4,980.99
  6. Step 6: Final answer
    x = 4,187.50

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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.