Home / 7,825.89-11,739.18-2,561.20

Finding the Fourth Proportional to 7,825.89, 11,739.18 and 2,561.20

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Solution

The fourth proportional to 7,825.89, 11,739.18 and 2,561.20 is: 3,841.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,825.89 : 11,739.18 = 2,561.20 : x
  2. Step 2: Convert to fraction form
    7,825.89/11,739.18 = 2,561.20/x
  3. Step 3: Cross multiply
    7,825.89x = 11,739.18 × 2,561.20
  4. Step 4: Simplify right side
    7,825.89x = 30,066,379.48
  5. Step 5: Solve for x
    x = 30,066,379.48/7,825.89
  6. Step 6: Final answer
    x = 3,841.91

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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.