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Finding the Fourth Proportional to 3,615.66, 4,989.48 and 2,043.78

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Solution

The fourth proportional to 3,615.66, 4,989.48 and 2,043.78 is: 2,820.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.66 : 4,989.48 = 2,043.78 : x
  2. Step 2: Convert to fraction form
    3,615.66/4,989.48 = 2,043.78/x
  3. Step 3: Cross multiply
    3,615.66x = 4,989.48 × 2,043.78
  4. Step 4: Simplify right side
    3,615.66x = 10,197,399.43
  5. Step 5: Solve for x
    x = 10,197,399.43/3,615.66
  6. Step 6: Final answer
    x = 2,820.34

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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.