Home / 7,418.75-11,129.22-2,153.80

Finding the Fourth Proportional to 7,418.75, 11,129.22 and 2,153.80

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Solution

The fourth proportional to 7,418.75, 11,129.22 and 2,153.80 is: 3,231.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.75 : 11,129.22 = 2,153.80 : x
  2. Step 2: Convert to fraction form
    7,418.75/11,129.22 = 2,153.80/x
  3. Step 3: Cross multiply
    7,418.75x = 11,129.22 × 2,153.80
  4. Step 4: Simplify right side
    7,418.75x = 23,970,117.51
  5. Step 5: Solve for x
    x = 23,970,117.51/7,418.75
  6. Step 6: Final answer
    x = 3,231.02

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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.