Home / 1,103.20-1,522.08-637.36

Finding the Fourth Proportional to 1,103.20, 1,522.08 and 637.36

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Solution

The fourth proportional to 1,103.20, 1,522.08 and 637.36 is: 879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.20 : 1,522.08 = 637.36 : x
  2. Step 2: Convert to fraction form
    1,103.20/1,522.08 = 637.36/x
  3. Step 3: Cross multiply
    1,103.20x = 1,522.08 × 637.36
  4. Step 4: Simplify right side
    1,103.20x = 970,112.91
  5. Step 5: Solve for x
    x = 970,112.91/1,103.20
  6. Step 6: Final answer
    x = 879.36

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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.