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Finding the Fourth Proportional to 1,895.86, 2,843.43 and 646.51

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Solution

The fourth proportional to 1,895.86, 2,843.43 and 646.51 is: 969.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,895.86 : 2,843.43 = 646.51 : x
  2. Step 2: Convert to fraction form
    1,895.86/2,843.43 = 646.51/x
  3. Step 3: Cross multiply
    1,895.86x = 2,843.43 × 646.51
  4. Step 4: Simplify right side
    1,895.86x = 1,838,305.93
  5. Step 5: Solve for x
    x = 1,838,305.93/1,895.86
  6. Step 6: Final answer
    x = 969.64

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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.