Home / 5,115.30-7,661.61-4,136.82

Finding the Fourth Proportional to 5,115.30, 7,661.61 and 4,136.82

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Solution

The fourth proportional to 5,115.30, 7,661.61 and 4,136.82 is: 6,196.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.30 : 7,661.61 = 4,136.82 : x
  2. Step 2: Convert to fraction form
    5,115.30/7,661.61 = 4,136.82/x
  3. Step 3: Cross multiply
    5,115.30x = 7,661.61 × 4,136.82
  4. Step 4: Simplify right side
    5,115.30x = 31,694,701.48
  5. Step 5: Solve for x
    x = 31,694,701.48/5,115.30
  6. Step 6: Final answer
    x = 6,196.06

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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.