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Finding the Fourth Proportional to 2,757.78, 4,133.84 and 1,113.48

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Solution

The fourth proportional to 2,757.78, 4,133.84 and 1,113.48 is: 1,669.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.78 : 4,133.84 = 1,113.48 : x
  2. Step 2: Convert to fraction form
    2,757.78/4,133.84 = 1,113.48/x
  3. Step 3: Cross multiply
    2,757.78x = 4,133.84 × 1,113.48
  4. Step 4: Simplify right side
    2,757.78x = 4,602,942.60
  5. Step 5: Solve for x
    x = 4,602,942.60/2,757.78
  6. Step 6: Final answer
    x = 1,669.08

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1.5x scale

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.