Home / 2,480.10-3,422.55-1,361.09

Finding the Fourth Proportional to 2,480.10, 3,422.55 and 1,361.09

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Solution

The fourth proportional to 2,480.10, 3,422.55 and 1,361.09 is: 1,878.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.10 : 3,422.55 = 1,361.09 : x
  2. Step 2: Convert to fraction form
    2,480.10/3,422.55 = 1,361.09/x
  3. Step 3: Cross multiply
    2,480.10x = 3,422.55 × 1,361.09
  4. Step 4: Simplify right side
    2,480.10x = 4,658,381.47
  5. Step 5: Solve for x
    x = 4,658,381.47/2,480.10
  6. Step 6: Final answer
    x = 1,878.30

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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.