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Finding the Fourth Proportional to 1,860.94, 2,789.92 and 936.02

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Solution

The fourth proportional to 1,860.94, 2,789.92 and 936.02 is: 1,403.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.94 : 2,789.92 = 936.02 : x
  2. Step 2: Convert to fraction form
    1,860.94/2,789.92 = 936.02/x
  3. Step 3: Cross multiply
    1,860.94x = 2,789.92 × 936.02
  4. Step 4: Simplify right side
    1,860.94x = 2,611,402.29
  5. Step 5: Solve for x
    x = 2,611,402.29/1,860.94
  6. Step 6: Final answer
    x = 1,403.27

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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.