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Finding the Fourth Proportional to 3,172.99, 4,379.26 and 1,847.47

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Solution

The fourth proportional to 3,172.99, 4,379.26 and 1,847.47 is: 2,549.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.99 : 4,379.26 = 1,847.47 : x
  2. Step 2: Convert to fraction form
    3,172.99/4,379.26 = 1,847.47/x
  3. Step 3: Cross multiply
    3,172.99x = 4,379.26 × 1,847.47
  4. Step 4: Simplify right side
    3,172.99x = 8,090,542.23
  5. Step 5: Solve for x
    x = 8,090,542.23/3,172.99
  6. Step 6: Final answer
    x = 2,549.82

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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.