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Finding the Fourth Proportional to 1,860.64, 2,791.06 and 933.59

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Solution

The fourth proportional to 1,860.64, 2,791.06 and 933.59 is: 1,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.64 : 2,791.06 = 933.59 : x
  2. Step 2: Convert to fraction form
    1,860.64/2,791.06 = 933.59/x
  3. Step 3: Cross multiply
    1,860.64x = 2,791.06 × 933.59
  4. Step 4: Simplify right side
    1,860.64x = 2,605,710.35
  5. Step 5: Solve for x
    x = 2,605,710.35/1,860.64
  6. Step 6: Final answer
    x = 1,400.44

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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.