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Finding the Fourth Proportional to 3,157.99, 4,359.42 and 1,899.25

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Solution

The fourth proportional to 3,157.99, 4,359.42 and 1,899.25 is: 2,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.99 : 4,359.42 = 1,899.25 : x
  2. Step 2: Convert to fraction form
    3,157.99/4,359.42 = 1,899.25/x
  3. Step 3: Cross multiply
    3,157.99x = 4,359.42 × 1,899.25
  4. Step 4: Simplify right side
    3,157.99x = 8,279,617.54
  5. Step 5: Solve for x
    x = 8,279,617.54/3,157.99
  6. Step 6: Final answer
    x = 2,621.80

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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.