Home / 1,191.25-1,638.45-1,043.63

Finding the Fourth Proportional to 1,191.25, 1,638.45 and 1,043.63

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Solution

The fourth proportional to 1,191.25, 1,638.45 and 1,043.63 is: 1,435.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.25 : 1,638.45 = 1,043.63 : x
  2. Step 2: Convert to fraction form
    1,191.25/1,638.45 = 1,043.63/x
  3. Step 3: Cross multiply
    1,191.25x = 1,638.45 × 1,043.63
  4. Step 4: Simplify right side
    1,191.25x = 1,709,935.57
  5. Step 5: Solve for x
    x = 1,709,935.57/1,191.25
  6. Step 6: Final answer
    x = 1,435.41

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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.