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Finding the Fourth Proportional to 1,857.55, 2,786.73 and 933.07

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Solution

The fourth proportional to 1,857.55, 2,786.73 and 933.07 is: 1,399.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.55 : 2,786.73 = 933.07 : x
  2. Step 2: Convert to fraction form
    1,857.55/2,786.73 = 933.07/x
  3. Step 3: Cross multiply
    1,857.55x = 2,786.73 × 933.07
  4. Step 4: Simplify right side
    1,857.55x = 2,600,214.16
  5. Step 5: Solve for x
    x = 2,600,214.16/1,857.55
  6. Step 6: Final answer
    x = 1,399.81

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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.