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Finding the Fourth Proportional to 3,775.36, 5,208.56 and 2,783

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Solution

The fourth proportional to 3,775.36, 5,208.56 and 2,783 is: 3,839.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,775.36 : 5,208.56 = 2,783 : x
  2. Step 2: Convert to fraction form
    3,775.36/5,208.56 = 2,783/x
  3. Step 3: Cross multiply
    3,775.36x = 5,208.56 × 2,783
  4. Step 4: Simplify right side
    3,775.36x = 14,495,422.48
  5. Step 5: Solve for x
    x = 14,495,422.48/3,775.36
  6. Step 6: Final answer
    x = 3,839.48

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1.5x scale

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.