Home / 3,291.63-4,542.46-1,965.31

Finding the Fourth Proportional to 3,291.63, 4,542.46 and 1,965.31

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Solution

The fourth proportional to 3,291.63, 4,542.46 and 1,965.31 is: 2,712.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.63 : 4,542.46 = 1,965.31 : x
  2. Step 2: Convert to fraction form
    3,291.63/4,542.46 = 1,965.31/x
  3. Step 3: Cross multiply
    3,291.63x = 4,542.46 × 1,965.31
  4. Step 4: Simplify right side
    3,291.63x = 8,927,342.06
  5. Step 5: Solve for x
    x = 8,927,342.06/3,291.63
  6. Step 6: Final answer
    x = 2,712.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.