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Finding the Fourth Proportional to 2,131.99, 3,197.73 and 572.11

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Solution

The fourth proportional to 2,131.99, 3,197.73 and 572.11 is: 858.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.99 : 3,197.73 = 572.11 : x
  2. Step 2: Convert to fraction form
    2,131.99/3,197.73 = 572.11/x
  3. Step 3: Cross multiply
    2,131.99x = 3,197.73 × 572.11
  4. Step 4: Simplify right side
    2,131.99x = 1,829,437.32
  5. Step 5: Solve for x
    x = 1,829,437.32/2,131.99
  6. Step 6: Final answer
    x = 858.09

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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.