Home / 3,922.02-5,412.72-2,860.14

Finding the Fourth Proportional to 3,922.02, 5,412.72 and 2,860.14

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Solution

The fourth proportional to 3,922.02, 5,412.72 and 2,860.14 is: 3,947.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.02 : 5,412.72 = 2,860.14 : x
  2. Step 2: Convert to fraction form
    3,922.02/5,412.72 = 2,860.14/x
  3. Step 3: Cross multiply
    3,922.02x = 5,412.72 × 2,860.14
  4. Step 4: Simplify right side
    3,922.02x = 15,481,136.98
  5. Step 5: Solve for x
    x = 15,481,136.98/3,922.02
  6. Step 6: Final answer
    x = 3,947.24

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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.