Home / 7,215.98-9,958.55-4,029.90

Finding the Fourth Proportional to 7,215.98, 9,958.55 and 4,029.90

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Solution

The fourth proportional to 7,215.98, 9,958.55 and 4,029.90 is: 5,561.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.98 : 9,958.55 = 4,029.90 : x
  2. Step 2: Convert to fraction form
    7,215.98/9,958.55 = 4,029.90/x
  3. Step 3: Cross multiply
    7,215.98x = 9,958.55 × 4,029.90
  4. Step 4: Simplify right side
    7,215.98x = 40,131,960.65
  5. Step 5: Solve for x
    x = 40,131,960.65/7,215.98
  6. Step 6: Final answer
    x = 5,561.54

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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.