Home / 7,825.16-11,708.31-5,489.72

Finding the Fourth Proportional to 7,825.16, 11,708.31 and 5,489.72

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Solution

The fourth proportional to 7,825.16, 11,708.31 and 5,489.72 is: 8,213.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,825.16 : 11,708.31 = 5,489.72 : x
  2. Step 2: Convert to fraction form
    7,825.16/11,708.31 = 5,489.72/x
  3. Step 3: Cross multiply
    7,825.16x = 11,708.31 × 5,489.72
  4. Step 4: Simplify right side
    7,825.16x = 64,275,372.84
  5. Step 5: Solve for x
    x = 64,275,372.84/7,825.16
  6. Step 6: Final answer
    x = 8,213.93

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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.