Home / 5,905.85-8,149.71-3,515.99

Finding the Fourth Proportional to 5,905.85, 8,149.71 and 3,515.99

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Solution

The fourth proportional to 5,905.85, 8,149.71 and 3,515.99 is: 4,851.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,905.85 : 8,149.71 = 3,515.99 : x
  2. Step 2: Convert to fraction form
    5,905.85/8,149.71 = 3,515.99/x
  3. Step 3: Cross multiply
    5,905.85x = 8,149.71 × 3,515.99
  4. Step 4: Simplify right side
    5,905.85x = 28,654,319.24
  5. Step 5: Solve for x
    x = 28,654,319.24/5,905.85
  6. Step 6: Final answer
    x = 4,851.86

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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.