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Finding the Fourth Proportional to 1,860.52, 2,791.02 and 561.88

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Solution

The fourth proportional to 1,860.52, 2,791.02 and 561.88 is: 842.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.52 : 2,791.02 = 561.88 : x
  2. Step 2: Convert to fraction form
    1,860.52/2,791.02 = 561.88/x
  3. Step 3: Cross multiply
    1,860.52x = 2,791.02 × 561.88
  4. Step 4: Simplify right side
    1,860.52x = 1,568,218.32
  5. Step 5: Solve for x
    x = 1,568,218.32/1,860.52
  6. Step 6: Final answer
    x = 842.89

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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.