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Finding the Fourth Proportional to 2,287.93, 3,430.87 and 727.64

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Solution

The fourth proportional to 2,287.93, 3,430.87 and 727.64 is: 1,091.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.93 : 3,430.87 = 727.64 : x
  2. Step 2: Convert to fraction form
    2,287.93/3,430.87 = 727.64/x
  3. Step 3: Cross multiply
    2,287.93x = 3,430.87 × 727.64
  4. Step 4: Simplify right side
    2,287.93x = 2,496,438.25
  5. Step 5: Solve for x
    x = 2,496,438.25/2,287.93
  6. Step 6: Final answer
    x = 1,091.13

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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.