Home / 7,144.99-9,860.69-4,161.76

Finding the Fourth Proportional to 7,144.99, 9,860.69 and 4,161.76

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Solution

The fourth proportional to 7,144.99, 9,860.69 and 4,161.76 is: 5,743.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.99 : 9,860.69 = 4,161.76 : x
  2. Step 2: Convert to fraction form
    7,144.99/9,860.69 = 4,161.76/x
  3. Step 3: Cross multiply
    7,144.99x = 9,860.69 × 4,161.76
  4. Step 4: Simplify right side
    7,144.99x = 41,037,810.97
  5. Step 5: Solve for x
    x = 41,037,810.97/7,144.99
  6. Step 6: Final answer
    x = 5,743.58

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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.