Home / 7,018.25-9,684.36-4,185.78

Finding the Fourth Proportional to 7,018.25, 9,684.36 and 4,185.78

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Solution

The fourth proportional to 7,018.25, 9,684.36 and 4,185.78 is: 5,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.25 : 9,684.36 = 4,185.78 : x
  2. Step 2: Convert to fraction form
    7,018.25/9,684.36 = 4,185.78/x
  3. Step 3: Cross multiply
    7,018.25x = 9,684.36 × 4,185.78
  4. Step 4: Simplify right side
    7,018.25x = 40,536,531.05
  5. Step 5: Solve for x
    x = 40,536,531.05/7,018.25
  6. Step 6: Final answer
    x = 5,775.88

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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.