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Finding the Fourth Proportional to 2,556.98, 3,835.48 and 913.52

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Solution

The fourth proportional to 2,556.98, 3,835.48 and 913.52 is: 1,370.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556.98 : 3,835.48 = 913.52 : x
  2. Step 2: Convert to fraction form
    2,556.98/3,835.48 = 913.52/x
  3. Step 3: Cross multiply
    2,556.98x = 3,835.48 × 913.52
  4. Step 4: Simplify right side
    2,556.98x = 3,503,787.69
  5. Step 5: Solve for x
    x = 3,503,787.69/2,556.98
  6. Step 6: Final answer
    x = 1,370.28

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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.