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Finding the Fourth Proportional to 1,890.16, 2,832.35 and 793.93

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Solution

The fourth proportional to 1,890.16, 2,832.35 and 793.93 is: 1,189.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.16 : 2,832.35 = 793.93 : x
  2. Step 2: Convert to fraction form
    1,890.16/2,832.35 = 793.93/x
  3. Step 3: Cross multiply
    1,890.16x = 2,832.35 × 793.93
  4. Step 4: Simplify right side
    1,890.16x = 2,248,687.64
  5. Step 5: Solve for x
    x = 2,248,687.64/1,890.16
  6. Step 6: Final answer
    x = 1,189.68

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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.