Home / 5,135.50-7,087.08-3,040.12

Finding the Fourth Proportional to 5,135.50, 7,087.08 and 3,040.12

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Solution

The fourth proportional to 5,135.50, 7,087.08 and 3,040.12 is: 4,195.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.50 : 7,087.08 = 3,040.12 : x
  2. Step 2: Convert to fraction form
    5,135.50/7,087.08 = 3,040.12/x
  3. Step 3: Cross multiply
    5,135.50x = 7,087.08 × 3,040.12
  4. Step 4: Simplify right side
    5,135.50x = 21,545,573.65
  5. Step 5: Solve for x
    x = 21,545,573.65/5,135.50
  6. Step 6: Final answer
    x = 4,195.42

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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.