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Finding the Fourth Proportional to 2,129.98, 3,194.73 and 570.15

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Solution

The fourth proportional to 2,129.98, 3,194.73 and 570.15 is: 855.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.98 : 3,194.73 = 570.15 : x
  2. Step 2: Convert to fraction form
    2,129.98/3,194.73 = 570.15/x
  3. Step 3: Cross multiply
    2,129.98x = 3,194.73 × 570.15
  4. Step 4: Simplify right side
    2,129.98x = 1,821,475.31
  5. Step 5: Solve for x
    x = 1,821,475.31/2,129.98
  6. Step 6: Final answer
    x = 855.16

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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.