Home / 7,218.36-9,961.47-4,074.60

Finding the Fourth Proportional to 7,218.36, 9,961.47 and 4,074.60

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Solution

The fourth proportional to 7,218.36, 9,961.47 and 4,074.60 is: 5,623.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.36 : 9,961.47 = 4,074.60 : x
  2. Step 2: Convert to fraction form
    7,218.36/9,961.47 = 4,074.60/x
  3. Step 3: Cross multiply
    7,218.36x = 9,961.47 × 4,074.60
  4. Step 4: Simplify right side
    7,218.36x = 40,589,005.66
  5. Step 5: Solve for x
    x = 40,589,005.66/7,218.36
  6. Step 6: Final answer
    x = 5,623.02

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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.