Home / 2,642.63-3,964.55-911.25

Finding the Fourth Proportional to 2,642.63, 3,964.55 and 911.25

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Solution

The fourth proportional to 2,642.63, 3,964.55 and 911.25 is: 1,367.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.63 : 3,964.55 = 911.25 : x
  2. Step 2: Convert to fraction form
    2,642.63/3,964.55 = 911.25/x
  3. Step 3: Cross multiply
    2,642.63x = 3,964.55 × 911.25
  4. Step 4: Simplify right side
    2,642.63x = 3,612,691.63
  5. Step 5: Solve for x
    x = 3,612,691.63/2,642.63
  6. Step 6: Final answer
    x = 1,367.08

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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.