Home / 5,519.78-7,615.70-3,161.46

Finding the Fourth Proportional to 5,519.78, 7,615.70 and 3,161.46

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Solution

The fourth proportional to 5,519.78, 7,615.70 and 3,161.46 is: 4,361.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,519.78 : 7,615.70 = 3,161.46 : x
  2. Step 2: Convert to fraction form
    5,519.78/7,615.70 = 3,161.46/x
  3. Step 3: Cross multiply
    5,519.78x = 7,615.70 × 3,161.46
  4. Step 4: Simplify right side
    5,519.78x = 24,076,730.92
  5. Step 5: Solve for x
    x = 24,076,730.92/5,519.78
  6. Step 6: Final answer
    x = 4,361.90

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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.